{"data":{"id":"us/40-cfr-81.314","jurisdiction":"us","citation":"40 CFR 81.314","heading":"Illinois.","body":"Illinois—TSP\nDesignated area Does not meet primary Does not meet secondary Cannot be classified Better than national standards\nCook County:\na. Lyons Township X X\nb. The area bounded on the north by 79th Street, on the west by Interstate 57 between Sibley Boulevard and Interstate 94 and by Interstate 94 between Interstate 57 and 79th Street, on the south by Sibley Boulevard, and on the east by the Illinois/Indiana State line X X\nLaSalle County:\nThose portions of LaSalle Township located in the following Townships, ranges, and sections: T33N, R1E, S24; T33N, R1E, S25; T33N, R2E, S30; T33N, R2E, S31; and T33N, R1E, S36 X X\nThose portions of Deer Park Township located in the following Townships, ranges, and sections: T32N, R1E, S1; T32N, R2E, S6; T33N, R1E, S24; T33N, R1E, S25; T33N, R2E, S30; T33N, R2E, S31; and T33N, R1E, S36 X\nMadison County: Granite City Township and Nameoki Township X X\nAll other portions of Illinois counties X\nIllinois—1971 Sulfur Dioxide NAAQS\n[Primary and Secondary]\nDesignated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards\nAQCR 65:\nFulton County X\nHancock County X\nHenderson County X\nKnox County X\nMcDonough County X\nMason County X\nPeoria County X\nTazewell County X\nWarren County X\nWoodford County X\nLee County X\nAQCR 66:\nChampaign County X\nClark County X\nColes County X\nCumberland County X\nDe Witt County X\nDouglas County X\nEdgar County X\nFord County X\nIroquois County X\nLivingston County X\nMcLean County X\nMoultrie County X\nPlatt County X\nShelby County X\nVermilion County X\nAQCR 67:\nCook County:\nBremer Twp X\nCalumet Twp X\nThornton Twp X\nWorth Twp X\nAll other Cook County twps X\nWill County:\nChannahon Twp X\nDu Page Twp X\nJoliet Twp X\nLockport Twp X\nTroy Twp X\nAll other Will County twps X\nDu Page County X\nGrundy County X\nKane County X\nKankakee County X\nKendall County X\nLake County X\nMcHenry County X\nAQCR 68:\nJo Daviess County X\nAQCR 69:\nCarroll County X\nHenry County X\nMercer County X\nRock Island County X\nWhiteside County X\nAQCR 70:\nMadison County:\nWood River Twp X\nAlton Twp X\nAll other Madison twps X\nBond County X\nClinton County X\nMonroe County X\nRandolph County X\nSt. Clair County X\nWashington County X\nAQCR 71:\nBureau County:\nShelby Twp X\nAll other Bureau twps X\nLa Salle County X\nLee County X\nMarshall County X\nPutnam County X\nStark County X\nAQCR 72:\nMassac County X\nAlexander County X\nJohnson County X\nPope County X\nPulaski County X\nUnion County X\nAQCR 73\nBoone County X\nDe Kalb County X\nOgle County X\nStephenson X\nWinnebago County X\nAQCR 74:\nClay County X\nCrawford County X\nEdwards County X\nEffingham County X\nFayette County X\nFranklin County X\nGallatin County X\nHamilton County X\nHardin County X\nJackson County X\nJasper County X\nJefferson County X\nLawrence County X\nMarion County X\nPerry County X\nRichland County X\nSaline County X\nWabash County X\nWayne County X\nWhite County X\nWilliamson County X\nAQCR 75:\nChristian County:\nSouth Fork Twp X\nAll other twps X\nSangamon County:\nCapital Twp X\nCooper Twp X\nCotton Hill Twp X\nRochester Twp X\nWoodside Twp X\nAll other twps X\nAdams County X\nBrown County X\nCalhoun County X\nCass County X\nGreene County X\nJersey County X\nLogan County X\nMacon County X\nNacoupin County X\nMenard County X\nMontgomery County X\nMorgan County X\nPike County X\nSchuyler County X\nScott County X\nIllinois—2010 Sulfur Dioxide NAAQS\n[Primary]\nDesignated area 1 Designation\nDate 2 Type\nAlton Township, IL 12/30/2024 Attainment.\nMadison County (part) Within Alton Township: Area east of Corporal Belchik Memorial Expressway, south of East Broadway, south of Route 3, and north of Route 143\nLemont, IL 5/26/2020 Attainment.\nCook County (part)\nLemont Township\nWill County (part)\nDuPage Township and Lockport Township\nPekin, IL 5/26/2020 Attainment.\nTazewell County (part)\nCincinnati Township and Pekin Township\nPeoria County (part)\nHollis Township\nRest of State:\nAdams County Attainment/Unclassifiable.\nAlexander County Attainment/Unclassifiable.\nBond County Attainment/Unclassifiable.\nBoone County Attainment/Unclassifiable.\nBrown County Attainment/Unclassifiable.\nBureau County 9/12/2016 Attainment/Unclassifiable.\nCalhoun County Attainment/Unclassifiable.\nCarroll County Attainment/Unclassifiable.\nCass County Attainment/Unclassifiable.\nChampaign County Attainment/Unclassifiable.\nChristian County Attainment/Unclassifiable.\nClark County Attainment/Unclassifiable.\nClay County Attainment/Unclassifiable.\nClinton County Attainment/Unclassifiable.\nColes County Attainment/Unclassifiable.\nCook County (part) (remainder) Attainment/Unclassifiable.\nCrawford County Attainment/Unclassifiable.\nCumberland County Attainment/Unclassifiable.\nDe Kalb County Attainment/Unclassifiable.\nDe Witt County Attainment/Unclassifiable.\nDouglas County Attainment/Unclassifiable.\nDu Page County Attainment/Unclassifiable.\nEdgar County Attainment/Unclassifiable.\nEdwards County Attainment/Unclassifiable.\nEffingham County Attainment/Unclassifiable.\nFayette County Attainment/Unclassifiable.\nFord County Attainment/Unclassifiable.\nFranklin County Attainment/Unclassifiable.\nFulton County Attainment/Unclassifiable.\nGallatin County Attainment/Unclassifiable.\nGreene County Attainment/Unclassifiable.\nGrundy County Attainment/Unclassifiable.\nHamilton County Attainment/Unclassifiable.\nHancock County Attainment/Unclassifiable.\nHardin County Attainment/Unclassifiable.\nHenderson County Attainment/Unclassifiable.\nHenry County Attainment/Unclassifiable.\nIroquois County Attainment/Unclassifiable.\nJackson County Attainment/Unclassifiable.\nJasper County 9/12/2016 Attainment/Unclassifiable.\nJefferson County Attainment/Unclassifiable.\nJersey County Attainment/Unclassifiable.\nJo Daviess County Attainment/Unclassifiable.\nJohnson County Attainment/Unclassifiable.\nKane County Attainment/Unclassifiable.\nKankakee County Attainment/Unclassifiable.\nKendall County Attainment/Unclassifiable.\nKnox County Attainment/Unclassifiable.\nLake County Attainment/Unclassifiable.\nLa Salle County Attainment/Unclassifiable.\nLawrence County Attainment/Unclassifiable.\nLee County Attainment/Unclassifiable.\nLivingston County Attainment/Unclassifiable.\nLogan County Attainment/Unclassifiable.\nMcDonough County Attainment/Unclassifiable.\nMcHenry County Attainment/Unclassifiable.\nMcLean County Attainment/Unclassifiable.\nMacon County 4/30/2021 Attainment/Unclassifiable.\nMacoupin County Attainment/Unclassifiable.\nMadison County (part) (remainder) 4 Attainment/Unclassifiable.\nMarion County Attainment/Unclassifiable.\nMarshall County Attainment/Unclassifiable.\nMason County Attainment/Unclassifiable.\nMassac County 9/12/2016 Attainment/Unclassifiable.\nMenard County Attainment/Unclassifiable.\nMercer County Attainment/Unclassifiable.\nMonroe County Attainment/Unclassifiable.\nMontgomery County Attainment/Unclassifiable.\nMorgan County Attainment/Unclassifiable.\nMoultrie County Attainment/Unclassifiable.\nOgle County Attainment/Unclassifiable.\nPeoria County (part) (remainder) Attainment/Unclassifiable.\nPerry County Attainment/Unclassifiable.\nPiatt County Attainment/Unclassifiable.\nPike County Attainment/Unclassifiable.\nPope County Attainment/Unclassifiable.\nPulaski County Attainment/Unclassifiable.\nPutnam County 9/12/2016 Attainment/Unclassifiable.\nRandolph County Attainment/Unclassifiable.\nRichland County Attainment/Unclassifiable.\nRock Island County Attainment/Unclassifiable.\nSt. Clair County Attainment/Unclassifiable.\nSaline County Attainment/Unclassifiable.\nSangamon County Attainment/Unclassifiable.\nSchuyler County Attainment/Unclassifiable.\nScott County Attainment/Unclassifiable.\nShelby County Attainment/Unclassifiable.\nStark County Attainment/Unclassifiable.\nStephenson County Attainment/Unclassifiable.\nTazewell County (part) (remainder) Attainment/Unclassifiable.\nUnion County Attainment/Unclassifiable.\nVermilion County Attainment/Unclassifiable.\nWabash County Attainment/Unclassifiable.\nWarren County Attainment/Unclassifiable.\nWashington County Attainment/Unclassifiable.\nWayne County Attainment/Unclassifiable.\nWhite County Attainment/Unclassifiable.\nWhiteside County Attainment/Unclassifiable.\nWill County (part) (remainder) Attainment/Unclassifiable.\nWilliamson County 3 10/15/2019 Attainment/Unclassifiable.\nWinnebago County Attainment/Unclassifiable.\nWoodford County Attainment/Unclassifiable.\n1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.\n2 This date is April 9, 2018, unless otherwise noted.\n3 Williamson County was initially designated on September 12, 2016. The initial designation was reconsidered and modified on October 15, 2019.\n4 A portion of Madison County, specifically all of Wood River Township, and the area in Chouteau Township north of Cahokia Diversion Channel, was designated attainment/unclassifiable on 9/12/2016.\nIllinois—Carbon Monoxide\nDesignated Area Designation Classification\nDate 1 Type Date 1 Type\nAdams County Unclassifiable/Attainment\nAlexander County Unclassifiable/Attainment\nBond County Unclassifiable/Attainment\nBoone County Unclassifiable/Attainment\nBrown County Unclassifiable/Attainment\nBureau County Unclassifiable/Attainment\nCalhoun County Unclassifiable/Attainment\nCarroll County Unclassifiable/Attainment\nCass County Unclassifiable/Attainment\nChampaign County Unclassifiable/Attainment\nChristian County Unclassifiable/Attainment\nClark County Unclassifiable/Attainment\nClay County Unclassifiable/Attainment\nClinton County Unclassifiable/Attainment\nColes County Unclassifiable/Attainment\nCook County Unclassifiable/Attainment\nCrawford County Unclassifiable/Attainment\nCumberland County Unclassifiable/Attainment\nDe Kalb County Unclassifiable/Attainment\nDe Witt County Unclassifiable/Attainment\nDouglas County Unclassifiable/Attainment\nDu Page County Unclassifiable/Attainment\nEdgar County Unclassifiable/Attainment\nEdwards County Unclassifiable/Attainment\nEffingham County Unclassifiable/Attainment\nFayette County Unclassifiable/Attainment\nFord County Unclassifiable/Attainment\nFranklin County Unclassifiable/Attainment\nFulton County Unclassifiable/Attainment\nGallatin County Unclassifiable/Attainment\nGreene County Unclassifiable/Attainment\nGrundy County Unclassifiable/Attainment\nHamilton County Unclassifiable/Attainment\nHancock County Unclassifiable/Attainment\nHardin County Unclassifiable/Attainment\nHenderson County Unclassifiable/Attainment\nHenry County Unclassifiable/Attainment\nIroquois County Unclassifiable/Attainment\nJackson County Unclassifiable/Attainment\nJasper County Unclassifiable/Attainment\nJefferson County Unclassifiable/Attainment\nJersey County Unclassifiable/Attainment\nJo Daviess County Unclassifiable/Attainment\nJohnson County Unclassifiable/Attainment\nKane County Unclassifiable/Attainment\nKankakee County Unclassifiable/Attainment\nKendall County Unclassifiable/Attainment\nKnox County Unclassifiable/Attainment\nLake County Unclassifiable/Attainment\nLa Salle County Unclassifiable/Attainment\nLawrence County Unclassifiable/Attainment\nLee County Unclassifiable/Attainment\nLivingston County Unclassifiable/Attainment\nLogan County Unclassifiable/Attainment\nMacon County Unclassifiable/Attainment\nMacoupin County Unclassifiable/Attainment\nMadison County Unclassifiable/Attainment\nMarion County Unclassifiable/Attainment\nMarshall County Unclassifiable/Attainment\nMason County Unclassifiable/Attainment\nMassac County Unclassifiable/Attainment\nMcDonough County Unclassifiable/Attainment\nMcHenry County Unclassifiable/Attainment\nMcLean County Unclassifiable/Attainment\nMenard County Unclassifiable/Attainment\nMercer County Unclassifiable/Attainment\nMonroe County Unclassifiable/Attainment\nMontgomery County Unclassifiable/Attainment\nMorgan County Unclassifiable/Attainment\nMoultrie County Unclassifiable/Attainment\nOgle County Unclassifiable/Attainment\nPeoria County Unclassifiable/Attainment\nPerry County Unclassifiable/Attainment\nPiatt County Unclassifiable/Attainment\nPike County Unclassifiable/Attainment\nPope County Unclassifiable/Attainment\nPulaski County Unclassifiable/Attainment\nPutnam County Unclassifiable/Attainment\nRandolph County Unclassifiable/Attainment\nRichland County Unclassifiable/Attainment\nRock Island County Unclassifiable/Attainment\nSt. Clair County Unclassifiable/Attainment\nSaline County Unclassifiable/Attainment\nSangamon County Unclassifiable/Attainment\nSchuyler County Unclassifiable/Attainment\nScott County Unclassifiable/Attainment\nShelby County Unclassifiable/Attainment\nStark County Unclassifiable/Attainment\nStephenson County Unclassifiable/Attainment\nTazewell County Unclassifiable/Attainment\nUnion County Unclassifiable/Attainment\nVermilion County Unclassifiable/Attainment\nWabash County Unclassifiable/Attainment\nWarren County Unclassifiable/Attainment\nWashington County Unclassifiable/Attainment\nWayne County Unclassifiable/Attainment\nWhite County Unclassifiable/Attainment\nWhiteside County Unclassifiable/Attainment\nWill County Unclassifiable/Attainment\nWilliamson County Unclassifiable/Attainment\nWinnebago County Unclassifiable/Attainment\nWoodford County Unclassifiable/Attainment\n1 This date is November 15, 1990, unless otherwise noted.\nIllinois—Ozone (1-Hour Standard)3\nDesignated area Designation Classification\nDate1 Type Date1 Type\nChicago-Gary-Lake County Area:\nCook County 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nDu Page County 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nGrundy County (part)\nAux Sable Township 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nGoose Lake Township 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nKane County 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nKendall County (part)\nOswego Township 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nLake County 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nMcHenry County 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nWill County 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nJersey County Area:\nJersey County Attainment 2\nSt. Louis Area:\nMadison County 5/12/2003 Attainment\nMonroe County 5/12/2003 Attainment\nSt. Clair County 5/12/2003 Attainment\nAdams County Unclassifiable/Attainment\nAlexander County Unclassifiable/Attainment\nBond County Unclassifiable/Attainment\nBoone County Unclassifiable/Attainment\nBrown County Unclassifiable/Attainment\nBureau County Unclassifiable/Attainment\nCalhoun County Unclassifiable/Attainment\nCarroll County Unclassifiable/Attainment\nCass County Unclassifiable/Attainment\nChampaign County Unclassifiable/Attainment\nChristian County Unclassifiable/Attainment\nClark County Unclassifiable/Attainment\nClay County Unclassifiable/Attainment\nClinton County Unclassifiable/Attainment\nColes County Unclassifiable/Attainment\nCrawford County Unclassifiable/Attainment\nCumberland County Unclassifiable/Attainment\nDe Kalb County Unclassifiable/Attainment\nDe Witt County Unclassifiable/Attainment\nDouglas County Unclassifiable/Attainment\nEdgar County Unclassifiable/Attainment\nEdwards County Unclassifiable/Attainment\nEffingham County Unclassifiable/Attainment\nFayette County Unclassifiable/Attainment\nFord County Unclassifiable/Attainment\nFranklin County Unclassifiable/Attainment\nFulton County Unclassifiable/Attainment\nGallatin County Unclassifiable/Attainment\nGreene County Unclassifiable/Attainment\nGrundy County (part) All townships except Aux Sable and Goose Lake Unclassifiable/Attainment\nHamilton County Unclassifiable/Attainment\nHancock County Unclassifiable/Attainment\nHardin County Unclassifiable/Attainment\nHenderson County Unclassifiable/Attainment\nHenry County Unclassifiable/Attainment\nIroquois County Unclassifiable/Attainment\nJackson County Unclassifiable/Attainment\nJasper County Unclassifiable/Attainment\nJefferson County Unclassifiable/Attainment\nJo Daviess County Unclassifiable/Attainment\nJohnson County Unclassifiable/Attainment\nKankakee County Unclassifiable/Attainment\nKendall County (part) All townships except Oswego Unclassifiable/Attainment\nKnox County Unclassifiable/Attainment\nLa Salle County Unclassifiable/Attainment\nLawrence County Unclassifiable/Attainment\nLee County Unclassifiable/Attainment\nLivingston County Unclassifiable/Attainment\nLogan County Unclassifiable/Attainment\nMacon County Unclassifiable/Attainment\nMacoupin County Unclassifiable/Attainment\nMarion County Unclassifiable/Attainment\nMarshall County Unclassifiable/Attainment\nMason County Unclassifiable/Attainment\nMassac County Unclassifiable/Attainment\nMcDonough County Unclassifiable/Attainment\nMcLean County Unclassifiable/Attainment\nMenard County Unclassifiable/Attainment\nMercer County Unclassifiable/Attainment\nMontgomery County Unclassifiable/Attainment\nMorgan County Unclassifiable/Attainment\nMoultrie County Unclassifiable/Attainment\nOgle County Unclassifiable/Attainment\nPeoria County Unclassifiable/Attainment\nPerry County Unclassifiable/Attainment\nPiatt County Unclassifiable/Attainment\nPike County Unclassifiable/Attainment\nPope County Unclassifiable/Attainment\nPulaski County Unclassifiable/Attainment\nPutnam County Unclassifiable/Attainment\nRandolph County Unclassifiable/Attainment\nRichland County Unclassifiable/Attainment\nRock Island County Unclassifiable/Attainment\nSaline County Unclassifiable/Attainment\nSangamon County Unclassifiable/Attainment\nSchuyler County Unclassifiable/Attainment\nScott County Unclassifiable/Attainment\nShelby County Unclassifiable/Attainment\nStark County Unclassifiable/Attainment\nStephenson County Unclassifiable/Attainment\nTazewell County Unclassifiable/Attainment\nUnion County Unclassifiable/Attainment\nVermilion County Unclassifiable/Attainment\nWabash County Unclassifiable/Attainment\nWarren County Unclassifiable/Attainment\nWashington County Unclassifiable/Attainment\nWayne County Unclassifiable/Attainment\nWhite County Unclassifiable/Attainment\nWhiteside County Unclassifiable/Attainment\nWilliamson County Unclassifiable/Attainment\nWinnebago County Unclassifiable/Attainment\nWoodford County Unclassifiable/Attainment\n1 This date is October 18, 2000, unless otherwise noted.\n2 April 13, 1995.\n3 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Illinois. The Jersey Co. and St. Louis areas are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.\nIllinois—PM-10\nDesignated area Designation Classification\nDate Type Date Type\nCook County\na. Lyons Township 11/21/2005 Attainment\nb. The area bounded on the north by 79th Street, on the west by Interstate 57 between Sibley Boulevard and Interstate 94 and by Interstate 94 between Interstate 57 and 79th Street, on the south by Sibley Boulevard, and on the east by the Illinois/Indiana State line 11/21/2005 Attainment\nLaSalle County 10/7/1996 Attainment\nOglesby including the following Townships, ranges, and sections: T32N, R1E, S1; T32N, R2E, S6; T33N, R1E, S24; T33N, R1E, S25; T33N, R2E, S30; T33N, R2E, S31; and T33N, R1E, S36\nMadison County\nGranite City Township and Nameoki Township 5/11/1998 Attainment\nRest of State 11/15/1990 Unclassifiable\nIllinois—1997 Annual PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date 2 Type\nChicago-Gary-Lake County, IL-IN: 10/2/2013 Attainment.\nCook County\nDuPage County\nGrundy County (part):\nGoose Lake and Aux Sable Townships\nKane County\nKendall County (part):\nOswego Township\nLake County\nMcHenry County\nWill County\nSt. Louis, MO-IL:\nMadison County 5/28/2019 Attainment\nMonroe County 5/28/2019 Attainment\nRandolph County (part): Baldwin Village 5/28/2019 Attainment\nSt. Clair County 5/28/2019 Attainment\nRest of State:\nAdams County Unclassifiable/Attainment.\nAlexander County Unclassifiable/Attainment.\nBond County Unclassifiable/Attainment.\nBoone County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBureau County Unclassifiable/Attainment.\nCalhoun County Unclassifiable/Attainment.\nCarroll County Unclassifiable/Attainment.\nCass County Unclassifiable/Attainment.\nChampaign County Unclassifiable/Attainment.\nChristian County Unclassifiable/Attainment.\nClark County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nClinton County Unclassifiable/Attainment.\nColes County Unclassifiable/Attainment.\nCrawford County Unclassifiable/Attainment.\nCumberland County Unclassifiable/Attainment.\nDeKalb County Unclassifiable/Attainment.\nDe Witt County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nEdgar County Unclassifiable/Attainment.\nEdwards County Unclassifiable/Attainment.\nEffingham County Unclassifiable/Attainment.\nFayette County Unclassifiable/Attainment.\nFord County Unclassifiable/Attainment.\nFranklin County Unclassifiable/Attainment.\nFulton County Unclassifiable/Attainment.\nGallatin County Unclassifiable/Attainment.\nGreene County Unclassifiable/Attainment.\nGrundy County (remainder) Unclassifiable/Attainment.\nHamilton County Unclassifiable/Attainment.\nHancock County Unclassifiable/Attainment.\nHardin County Unclassifiable/Attainment.\nHenderson County Unclassifiable/Attainment.\nHenry County Unclassifiable/Attainment.\nIroquois County Unclassifiable/Attainment.\nJackson County Unclassifiable/Attainment.\nJasper County Unclassifiable/Attainment.\nJefferson County Unclassifiable/Attainment.\nJersey County Unclassifiable/Attainment.\nJo Daviess County Unclassifiable/Attainment.\nJohnson County Unclassifiable/Attainment.\nKankakee County Unclassifiable/Attainment.\nKendall County (remainder) Unclassifiable/Attainment.\nKnox County Unclassifiable/Attainment.\nLa Salle County Unclassifiable/Attainment.\nLawrence County Unclassifiable/Attainment.\nLee County Unclassifiable/Attainment.\nLivingston County Unclassifiable/Attainment.\nLogan County Unclassifiable/Attainment.\nMcDonough County Unclassifiable/Attainment.\nMcLean County Unclassifiable/Attainment.\nMacon County Unclassifiable/Attainment.\nMacoupin County Unclassifiable/Attainment.\nMarion County Unclassifiable/Attainment.\nMarshall County Unclassifiable/Attainment.\nMason County Unclassifiable/Attainment.\nMassac County Unclassifiable/Attainment.\nMenard County Unclassifiable/Attainment.\nMercer County Unclassifiable/Attainment.\nMontgomery County Unclassifiable/Attainment.\nMorgan County Unclassifiable/Attainment.\nMoultrie County Unclassifiable/Attainment.\nOgle County Unclassifiable/Attainment.\nPeoria County Unclassifiable/Attainment.\nPerry County Unclassifiable/Attainment.\nPiatt County Unclassifiable/Attainment.\nPike County Unclassifiable/Attainment.\nPope County Unclassifiable/Attainment.\nPulaski County Unclassifiable/Attainment.\nPutnam County Unclassifiable/Attainment.\nRandolph County (remainder) Unclassifiable/Attainment.\nRichland County Unclassifiable/Attainment.\nRock Island County Unclassifiable/Attainment.\nSaline County Unclassifiable/Attainment.\nSangamon County Unclassifiable/Attainment.\nSchuyler County Unclassifiable/Attainment.\nScott County Unclassifiable/Attainment.\nShelby County Unclassifiable/Attainment.\nStark County Unclassifiable/Attainment.\nStephenson County Unclassifiable/Attainment.\nTazewell County Unclassifiable/Attainment.\nUnion County Unclassifiable/Attainment.\nVermilion County Unclassifiable/Attainment.\nWabash County Unclassifiable/Attainment.\nWarren County Unclassifiable/Attainment.\nWashington County Unclassifiable/Attainment.\nWayne County Unclassifiable/Attainment.\nWhite County Unclassifiable/Attainment.\nWhiteside County Unclassifiable/Attainment.\nWilliamson County Unclassifiable/Attainment.\nWinnebago County Unclassifiable/Attainment.\nWoodford County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after January 5, 2005, unless otherwise noted.\n2 This date is July 2, 2014, unless otherwise noted.\nIllinois—2012 Annual PM2.5 NAAQS\n[Primary]\nDesignated area 1 Designation Classification\nDate 2 Type Date 2 Type\nChicago, IL-IN:\nCook County Unclassifiable/Attainment.\nDuPage County Unclassifiable/Attainment.\nGrundy County (part) Unclassifiable/Attainment.\nGoose Lake and Aux Sable Townships Unclassifiable/Attainment.\nKane County Unclassifiable/Attainment.\nKendall County (part) Unclassifiable/Attainment.\nOswego Township Unclassifiable/Attainment.\nLake County Unclassifiable/Attainment.\nMcHenry County Unclassifiable/Attainment.\nWill County Unclassifiable/Attainment.\nDavenport-Moline-Rock Island, IL:\nRock Island County Unclassifiable/Attainment.\nHenry County Unclassifiable/Attainment.\nMercer County Unclassifiable/Attainment.\nSt. Louis, MO-IL:\nMadison County Unclassifiable/Attainment.\nMonroe County Unclassifiable/Attainment.\nRandolph County (part) Unclassifiable/Attainment.\nBaldwin Village Unclassifiable/Attainment.\nSt. Clair County Unclassifiable/Attainment.\nRest of State:\nAdams County Unclassifiable/Attainment.\nAlexander County Unclassifiable/Attainment.\nBond County Unclassifiable/Attainment.\nBoone County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBureau County Unclassifiable/Attainment.\nCalhoun County Unclassifiable/Attainment.\nCarroll County Unclassifiable/Attainment.\nCass County Unclassifiable/Attainment.\nChampaign County Unclassifiable/Attainment.\nChristian County Unclassifiable/Attainment.\nClark County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nClinton County Unclassifiable/Attainment.\nColes County Unclassifiable/Attainment.\nCrawford County Unclassifiable/Attainment.\nCumberland County Unclassifiable/Attainment.\nDeKalb County Unclassifiable/Attainment.\nDe Witt County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nEdgar County Unclassifiable/Attainment.\nEdwards County Unclassifiable/Attainment.\nEffingham County Unclassifiable/Attainment.\nFayette County Unclassifiable/Attainment.\nFord County Unclassifiable/Attainment.\nFranklin County Unclassifiable/Attainment.\nFulton County Unclassifiable/Attainment.\nGallatin County Unclassifiable/Attainment.\nGreene County Unclassifiable/Attainment.\nGrundy County (remainder) Unclassifiable/Attainment.\nHamilton County Unclassifiable/Attainment.\nHancock County Unclassifiable/Attainment.\nHardin County Unclassifiable/Attainment.\nHenderson County Unclassifiable/Attainment.\nIroquois County Unclassifiable/Attainment.\nJackson County Unclassifiable/Attainment.\nJasper County Unclassifiable/Attainment.\nJefferson County Unclassifiable/Attainment.\nJersey County Unclassifiable/Attainment.\nJo Daviess County Unclassifiable/Attainment.\nJohnson County Unclassifiable/Attainment.\nKankakee County Unclassifiable/Attainment.\nKendall County (remainder) Unclassifiable/Attainment.\nKnox County Unclassifiable/Attainment.\nLa Salle County Unclassifiable/Attainment.\nLawrence County Unclassifiable/Attainment.\nLee County Unclassifiable/Attainment.\nLivingston County Unclassifiable/Attainment.\nLogan County Unclassifiable/Attainment.\nMcDonough County Unclassifiable/Attainment.\nMcLean County Unclassifiable/Attainment.\nMacon County Unclassifiable/Attainment.\nMacoupin County Unclassifiable/Attainment.\nMarion County Unclassifiable/Attainment.\nMarshall County Unclassifiable/Attainment.\nMason County Unclassifiable/Attainment.\nMassac County Unclassifiable/Attainment.\nMenard County Unclassifiable/Attainment.\nMontgomery County Unclassifiable/Attainment.\nMorgan County Unclassifiable/Attainment.\nMoultrie County Unclassifiable/Attainment.\nOgle County Unclassifiable/Attainment.\nPeoria County Unclassifiable/Attainment.\nPerry County Unclassifiable/Attainment.\nPiatt County Unclassifiable/Attainment.\nPike County Unclassifiable/Attainment.\nPope County Unclassifiable/Attainment.\nPulaski County Unclassifiable/Attainment.\nPutnam County Unclassifiable/Attainment.\nRandolph County (remainder) Unclassifiable/Attainment.\nRichland County Unclassifiable/Attainment.\nSaline County Unclassifiable/Attainment.\nSangamon County Unclassifiable/Attainment.\nSchuyler County Unclassifiable/Attainment.\nScott County Unclassifiable/Attainment.\nShelby County Unclassifiable/Attainment.\nStark County Unclassifiable/Attainment.\nStephenson County Unclassifiable/Attainment.\nTazewell County Unclassifiable/Attainment.\nUnion County Unclassifiable/Attainment.\nVermilion County Unclassifiable/Attainment.\nWabash County Unclassifiable/Attainment.\nWarren County Unclassifiable/Attainment.\nWashington County Unclassifiable/Attainment.\nWayne County Unclassifiable/Attainment.\nWhite County Unclassifiable/Attainment.\nWhiteside County Unclassifiable/Attainment.\nWilliamson County Unclassifiable/Attainment.\nWinnebago County Unclassifiable/Attainment.\nWoodford County Unclassifiable/Attainment.\n1 Includes Indian Country located in each county or area, except as otherwise specified.\n2 This date is January 28, 2019, unless otherwise noted.\nIllinois—1997 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nAdams County Unclassifiable/Attainment.\nAlexander County Unclassifiable/Attainment.\nBond County Unclassifiable/Attainment.\nBoone County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBureau County Unclassifiable/Attainment.\nCalhoun County Unclassifiable/Attainment.\nCarroll County Unclassifiable/Attainment.\nCass County Unclassifiable/Attainment.\nChampaign County Unclassifiable/Attainment.\nChristian County Unclassifiable/Attainment.\nClark County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nClinton County Unclassifiable/Attainment.\nColes County Unclassifiable/Attainment.\nCook County Unclassifiable/Attainment.\nCrawford County Unclassifiable/Attainment.\nCumberland County Unclassifiable/Attainment.\nDeKalb County Unclassifiable/Attainment.\nDe Witt County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nDuPage County Unclassifiable/Attainment.\nEdgar County Unclassifiable/Attainment.\nEdwards County Unclassifiable/Attainment.\nEffingham County Unclassifiable/Attainment.\nFayette County Unclassifiable/Attainment.\nFord County Unclassifiable/Attainment.\nFranklin County Unclassifiable/Attainment.\nFulton County Unclassifiable/Attainment.\nGallatin County Unclassifiable/Attainment.\nGreene County Unclassifiable/Attainment.\nGrundy County Unclassifiable/Attainment.\nHamilton County Unclassifiable/Attainment.\nHancock County Unclassifiable/Attainment.\nHardin County Unclassifiable/Attainment.\nHenderson County Unclassifiable/Attainment.\nHenry County Unclassifiable/Attainment.\nIroquois County Unclassifiable/Attainment.\nJackson County Unclassifiable/Attainment.\nJasper County Unclassifiable/Attainment.\nJefferson County Unclassifiable/Attainment.\nJersey County Unclassifiable/Attainment.\nJo Daviess County Unclassifiable/Attainment.\nJohnson County Unclassifiable/Attainment.\nKane County Unclassifiable/Attainment.\nKankakee County Unclassifiable/Attainment.\nKendall County Unclassifiable/Attainment.\nKnox County Unclassifiable/Attainment.\nLa Salle County Unclassifiable/Attainment.\nLake County Unclassifiable/Attainment.\nLawrence County Unclassifiable/Attainment.\nLee County Unclassifiable/Attainment.\nLivingston County Unclassifiable/Attainment.\nLogan County Unclassifiable/Attainment.\nMcDonough County Unclassifiable/Attainment.\nMcHenry County Unclassifiable/Attainment.\nMcLean County Unclassifiable/Attainment.\nMacon County Unclassifiable/Attainment.\nMacoupin County Unclassifiable/Attainment.\nMadison County Unclassifiable/Attainment.\nMarion County Unclassifiable/Attainment.\nMarshall County Unclassifiable/Attainment.\nMason County Unclassifiable/Attainment.\nMassac County Unclassifiable/Attainment.\nMenard County Unclassifiable/Attainment.\nMercer County Unclassifiable/Attainment.\nMonroe County Unclassifiable/Attainment.\nMontgomery County Unclassifiable/Attainment.\nMorgan County Unclassifiable/Attainment.\nMoultrie County Unclassifiable/Attainment.\nOgle County Unclassifiable/Attainment.\nPeoria County Unclassifiable/Attainment.\nPerry County Unclassifiable/Attainment.\nPiatt County Unclassifiable/Attainment.\nPike County Unclassifiable/Attainment.\nPope County Unclassifiable/Attainment.\nPulaski County Unclassifiable/Attainment.\nPutnam County Unclassifiable/Attainment.\nRandolph County Unclassifiable/Attainment.\nRichland County Unclassifiable/Attainment.\nRock Island County Unclassifiable/Attainment.\nSt. Clair County Unclassifiable/Attainment.\nSaline County Unclassifiable/Attainment.\nSangamon County Unclassifiable/Attainment.\nSchuyler County Unclassifiable/Attainment.\nScott County Unclassifiable/Attainment.\nShelby County Unclassifiable/Attainment.\nStark County Unclassifiable/Attainment.\nStephenson County Unclassifiable/Attainment.\nTazewell County Unclassifiable/Attainment.\nUnion County Unclassifiable/Attainment.\nVermilion County Unclassifiable/Attainment.\nWabash County Unclassifiable/Attainment.\nWarren County Unclassifiable/Attainment.\nWashington County Unclassifiable/Attainment.\nWayne County Unclassifiable/Attainment.\nWhite County Unclassifiable/Attainment.\nWhiteside County Unclassifiable/Attainment.\nWill County Unclassifiable/Attainment.\nWilliamson County Unclassifiable/Attainment.\nWinnebago County Unclassifiable/Attainment.\nWoodford County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after January 5, 2005, unless otherwise noted.\nIllinois—2006 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nAdams County Unclassifiable/Attainment\nAlexander County Unclassifiable/Attainment\nBond County Unclassifiable/Attainment\nBoone County Unclassifiable/Attainment\nBrown County Unclassifiable/Attainment\nBureau County Unclassifiable/Attainment\nCalhoun County Unclassifiable/Attainment\nCarroll County Unclassifiable/Attainment\nCass County Unclassifiable/Attainment\nChampaign County Unclassifiable/Attainment\nChristian County Unclassifiable/Attainment\nClark County Unclassifiable/Attainment\nClay County Unclassifiable/Attainment\nClinton County Unclassifiable/Attainment\nColes County Unclassifiable/Attainment\nCook County Unclassifiable/Attainment\nCrawford County Unclassifiable/Attainment\nCumberland County Unclassifiable/Attainment\nDeKalb County Unclassifiable/Attainment\nDe Witt County Unclassifiable/Attainment\nDouglas County Unclassifiable/Attainment\nDuPage County Unclassifiable/Attainment\nEdgar County Unclassifiable/Attainment\nEdwards County Unclassifiable/Attainment\nEffingham County Unclassifiable/Attainment\nFayette County Unclassifiable/Attainment\nFord County Unclassifiable/Attainment\nFranklin County Unclassifiable/Attainment\nFulton County Unclassifiable/Attainment\nGallatin County Unclassifiable/Attainment\nGreene County Unclassifiable/Attainment\nGrundy County Unclassifiable/Attainment\nHamilton County Unclassifiable/Attainment\nHancock County Unclassifiable/Attainment\nHardin County Unclassifiable/Attainment\nHenderson County Unclassifiable/Attainment\nHenry County Unclassifiable/Attainment\nIroquois County Unclassifiable/Attainment\nJackson County Unclassifiable/Attainment\nJasper County Unclassifiable/Attainment\nJefferson County Unclassifiable/Attainment\nJersey County Unclassifiable/Attainment\nJo Daviess County Unclassifiable/Attainment\nJohnson County Unclassifiable/Attainment\nKane County Unclassifiable/Attainment\nKankakee County Unclassifiable/Attainment\nKendall County Unclassifiable/Attainment\nKnox County Unclassifiable/Attainment\nLa Salle County Unclassifiable/Attainment\nLake County Unclassifiable/Attainment\nLawrence County Unclassifiable/Attainment\nLee County Unclassifiable/Attainment\nLivingston County Unclassifiable/Attainment\nLogan County Unclassifiable/Attainment\nMcDonough County Unclassifiable/Attainment\nMcHenry County Unclassifiable/Attainment\nMcLean County Unclassifiable/Attainment\nMacon County Unclassifiable/Attainment\nMacoupin County Unclassifiable/Attainment\nMadison County Unclassifiable/Attainment\nMarion County Unclassifiable/Attainment\nMarshall County Unclassifiable/Attainment\nMason County Unclassifiable/Attainment\nMassac County Unclassifiable/Attainment\nMenard County Unclassifiable/Attainment\nMercer County Unclassifiable/Attainment\nMonroe County Unclassifiable/Attainment\nMontgomery County Unclassifiable/Attainment\nMorgan County Unclassifiable/Attainment\nMoultrie County Unclassifiable/Attainment\nOgle County Unclassifiable/Attainment\nPeoria County Unclassifiable/Attainment\nPerry County Unclassifiable/Attainment\nPiatt County Unclassifiable/Attainment\nPike County Unclassifiable/Attainment\nPope County Unclassifiable/Attainment\nPulaski County Unclassifiable/Attainment\nPutnam County Unclassifiable/Attainment\nRandolph County Unclassifiable/Attainment\nRichland County Unclassifiable/Attainment\nRock Island County Unclassifiable/Attainment\nSt. Clair County Unclassifiable/Attainment\nSaline County Unclassifiable/Attainment\nSangamon County Unclassifiable/Attainment\nSchuyler County Unclassifiable/Attainment\nScott County Unclassifiable/Attainment\nShelby County Unclassifiable/Attainment\nStark County Unclassifiable/Attainment\nStephenson County Unclassifiable/Attainment\nTazewell County Unclassifiable/Attainment\nUnion County Unclassifiable/Attainment\nVermilion County Unclassifiable/Attainment\nWabash County Unclassifiable/Attainment\nWarren County Unclassifiable/Attainment\nWashington County Unclassifiable/Attainment\nWayne County Unclassifiable/Attainment\nWhite County Unclassifiable/Attainment\nWhiteside County Unclassifiable/Attainment\nWill County Unclassifiable/Attainment\nWilliamson County Unclassifiable/Attainment\nWinnebago County Unclassifiable/Attainment\nWoodford County Unclassifiable/Attainment\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 30 days after November 13, 2009, unless otherwise noted.\nIllinois—NO2 (1971 Annual Standard)\nDesignated area Does not meet primary standards Cannot be classified or better than national standards\nAQCR 65:\nFulton County X\nHancock County X\nHenderson County X\nKnox County X\nMcDonough County X\nMason County X\nPeoria County X\nTazewell County X\nWarren County X\nWoodford County X\nLee County X\nAQCR 66:\nChampaign County X\nClark County X\nColes County X\nCumberland County X\nDe Witt County X\nDouglas County X\nEdgar County X\nFord County X\nIroquois County X\nLivingston County X\nMcLean County X\nMoultrie County X\nPiatt County X\nShelby County X\nVermilion County X\nAQCR 67:\nCook County X\nDu Page County X\nGrundy County X\nKane County X\nKankakee County X\nKendall County X\nLake County X\nMcHenry County X\nWill County X\nAQCR 68:\nJo Daviess County X\nAQCR 69:\nCarroll County X\nHenry County X\nMercer County X\nRock Island County X\nWhiteside County X\nAQCR 70:\nBond County X\nClinton County X\nMadison County X\nMonroe County X\nRandolph County X\nSt. Clair County X\nWashington County X\nAQCR 71:\nBureau County X\nLa Salle County X\nLee County X\nMarshall County X\nPutnam County X\nStark County X\nAQCR 72:\nAlexander County X\nJohnson County X\nMassac County X\nPope County X\nPulaski County X\nUnion County X\nAQCR 73:\nBoone County X\nDe Kalb County X\nOgle County X\nStephenson County X\nWinnebago County X\nAQCR 74:\nClay County X\nCrawford County X\nEdwards County X\nEffingham County X\nFayette County X\nFranklin County X\nGallatin County X\nHamilton County X\nHardin County X\nJackson County X\nJasper County X\nJefferson County X\nLawrence County X\nMarion County X\nPerry County X\nRichland County X\nSaline County X\nWabash County X\nWayne County X\nWhite County X\nWilliamson County X\nAQCR 75:\nAdams County X\nBrown County X\nCalhoun County X\nCass County X\nChristian County X\nGreene County X\nJersey County X\nLogan County X\nMacon County X\nMacoupin County X\nMenard County X\nMontgomery County X\nMorgan County X\nPike County X\nSangamon County X\nSchuyler County X\nScott County X\nIllinois—NO2 (2010 1-Hour Standard)\nDesignated area Designation a\nDate 1 Type\nAdams County Unclassifiable/Attainment.\nAlexander County Unclassifiable/Attainment.\nBond County Unclassifiable/Attainment.\nBoone County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBureau County Unclassifiable/Attainment.\nCalhoun County Unclassifiable/Attainment.\nCarroll County Unclassifiable/Attainment.\nCass County Unclassifiable/Attainment.\nChampaign County Unclassifiable/Attainment.\nChristian County Unclassifiable/Attainment.\nClark County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nClinton County Unclassifiable/Attainment.\nColes County Unclassifiable/Attainment.\nCook County Unclassifiable/Attainment.\nCrawford County Unclassifiable/Attainment.\nCumberland County Unclassifiable/Attainment.\nDeKalb County Unclassifiable/Attainment.\nDe Witt County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nDuPage County Unclassifiable/Attainment.\nEdgar County Unclassifiable/Attainment.\nEdwards County Unclassifiable/Attainment.\nEffingham County Unclassifiable/Attainment.\nFayette County Unclassifiable/Attainment.\nFord County Unclassifiable/Attainment.\nFranklin County Unclassifiable/Attainment.\nFulton County Unclassifiable/Attainment.\nGallatin County Unclassifiable/Attainment.\nGreene County Unclassifiable/Attainment.\nGrundy County Unclassifiable/Attainment.\nHamilton County Unclassifiable/Attainment.\nHancock County Unclassifiable/Attainment.\nHardin County Unclassifiable/Attainment.\nHenderson County Unclassifiable/Attainment.\nHenry County Unclassifiable/Attainment.\nIroquois County Unclassifiable/Attainment.\nJackson County Unclassifiable/Attainment.\nJasper County Unclassifiable/Attainment.\nJefferson County Unclassifiable/Attainment.\nJersey County Unclassifiable/Attainment.\nJo Daviess County Unclassifiable/Attainment.\nJohnson County Unclassifiable/Attainment.\nKane County Unclassifiable/Attainment.\nKankakee County Unclassifiable/Attainment.\nKendall County Unclassifiable/Attainment.\nKnox County Unclassifiable/Attainment.\nLa Salle County Unclassifiable/Attainment.\nLake County Unclassifiable/Attainment.\nLawrence County Unclassifiable/Attainment.\nLee County Unclassifiable/Attainment.\nLivingston County Unclassifiable/Attainment.\nLogan County Unclassifiable/Attainment.\nMadison County Unclassifiable/Attainment.\nMcDonough County Unclassifiable/Attainment.\nMcLean County Unclassifiable/Attainment.\nMacon County Unclassifiable/Attainment.\nMacoupin County Unclassifiable/Attainment.\nMarion County Unclassifiable/Attainment.\nMarshall County Unclassifiable/Attainment.\nMason County Unclassifiable/Attainment.\nMassac County Unclassifiable/Attainment.\nMcHenry County Unclassifiable/Attainment.\nMenard County Unclassifiable/Attainment.\nMercer County Unclassifiable/Attainment.\nMonroe County Unclassifiable/Attainment.\nMontgomery County Unclassifiable/Attainment.\nMorgan County Unclassifiable/Attainment.\nMoultrie County Unclassifiable/Attainment.\nOgle County Unclassifiable/Attainment.\nPeoria County Unclassifiable/Attainment.\nPerry County Unclassifiable/Attainment.\nPiatt County Unclassifiable/Attainment.\nPike County Unclassifiable/Attainment.\nPope County Unclassifiable/Attainment.\nPulaski County Unclassifiable/Attainment.\nPutnam County Unclassifiable/Attainment.\nRandolph County Unclassifiable/Attainment.\nRichland County Unclassifiable/Attainment.\nRock Island County Unclassifiable/Attainment.\nSt. Clair County Unclassifiable/Attainment.\nSaline County Unclassifiable/Attainment.\nSangamon County Unclassifiable/Attainment.\nSchuyler County Unclassifiable/Attainment.\nScott County Unclassifiable/Attainment.\nShelby County Unclassifiable/Attainment.\nStark County Unclassifiable/Attainment.\nStephenson County Unclassifiable/Attainment.\nTazewell County Unclassifiable/Attainment.\nUnion County Unclassifiable/Attainment.\nVermilion County Unclassifiable/Attainment.\nWabash County Unclassifiable/Attainment.\nWarren County Unclassifiable/Attainment.\nWashington County Unclassifiable/Attainment.\nWayne County Unclassifiable/Attainment.\nWhite County Unclassifiable/Attainment.\nWhiteside County Unclassifiable/Attainment.\nWill County Unclassifiable/Attainment.\nWilliamson County Unclassifiable/Attainment.\nWinnebago County Unclassifiable/Attainment.\nWoodford County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after October 31, 2011, unless otherwise noted.\nIllinois—1997 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation a Category/classification\nDate 1 Type Date 1 Type\nChicago-Gary-Lake County, IL-IN:\nCook County 8/13/2012\nDuPage County Attainment\nGrundy County (part)\nAux Sable Township\nGoose Lake Township\nKane County\nKendall County (part)\nOswego Township\nLake County\nMcHenry County\nWill County\nSt. Louis, MO-IL:\nJersey County 6/12/2012 Attainment\nMadison County 6/12/2012 Attainment\nMonroe County 6/12/2012 Attainment\nSt. Clair County 6/12/2012 Attainment\nRest of State\nAdams County Unclassifiable/Attainment\nAlexander County Unclassifiable/Attainment\nBond County Unclassifiable/Attainment\nBoone County Unclassifiable/Attainment\nBrown County Unclassifiable/Attainment\nBureau County Unclassifiable/Attainment\nCalhoun County Unclassifiable/Attainment\nCarroll County Unclassifiable/Attainment\nCass County Unclassifiable/Attainment\nChampaign County Unclassifiable/Attainment\nChristian County Unclassifiable/Attainment\nClark County Unclassifiable/Attainment\nClay County Unclassifiable/Attainment\nClinton County Unclassifiable/Attainment\nColes County Unclassifiable/Attainment\nCrawford County Unclassifiable/Attainment\nCumberland County Unclassifiable/Attainment\nDe Witt County Unclassifiable/Attainment\nDeKalb County Unclassifiable/Attainment\nDouglas County Unclassifiable/Attainment\nEdgar County Unclassifiable/Attainment\nEdwards County Unclassifiable/Attainment\nEffingham County Unclassifiable/Attainment\nFayette County Unclassifiable/Attainment\nFord County Unclassifiable/Attainment\nFranklin County Unclassifiable/Attainment\nFulton County Unclassifiable/Attainment\nGallatin County Unclassifiable/Attainment\nGreene County Unclassifiable/Attainment\nGrundy County (part) Unclassifiable/Attainment\nAll townships except Aux Sable and Goose Lake.\nHamilton County Unclassifiable/Attainment\nHancock County Unclassifiable/Attainment\nHardin County Unclassifiable/Attainment\nHenderson County Unclassifiable/Attainment\nHenry County Unclassifiable/Attainment\nIroquois County Unclassifiable/Attainment\nJackson County Unclassifiable/Attainment\nJasper County Unclassifiable/Attainment\nJefferson County Unclassifiable/Attainment\nJo Daviess County Unclassifiable/Attainment\nJohnson County Unclassifiable/Attainment\nKankakee County Unclassifiable/Attainment\nKendall County (part) Unclassifiable/Attainment\nAll townships except Oswego\nKnox County Unclassifiable/Attainment\nLa Salle County Unclassifiable/Attainment\nLawrence County Unclassifiable/Attainment\nLee County Unclassifiable/Attainment\nLivingston County Unclassifiable/Attainment\nLogan County Unclassifiable/Attainment\nMacon County Unclassifiable/Attainment\nMacoupin County Unclassifiable/Attainment\nMarion County Unclassifiable/Attainment\nMarshall County Unclassifiable/Attainment\nMason County Unclassifiable/Attainment\nMassac County Unclassifiable/Attainment\nMcDonough County Unclassifiable/Attainment\nMcLean County Unclassifiable/Attainment\nMenard County Unclassifiable/Attainment\nMercer County Unclassifiable/Attainment\nMontgomery County Unclassifiable/Attainment\nMorgan County Unclassifiable/Attainment\nMoultrie County Unclassifiable/Attainment\nOgle County Unclassifiable/Attainment\nPeoria County Unclassifiable/Attainment\nPerry County Unclassifiable/Attainment\nPiatt County Unclassifiable/Attainment\nPike County Unclassifiable/Attainment\nPope County Unclassifiable/Attainment\nPulaski County Unclassifiable/Attainment\nPutnam County Unclassifiable/Attainment\nRandolph County Unclassifiable/Attainment\nRichland County Unclassifiable/Attainment\nRock Island County Unclassifiable/Attainment\nSaline County Unclassifiable/Attainment\nSangamon County Unclassifiable/Attainment\nSchuyler County Unclassifiable/Attainment\nScott County Unclassifiable/Attainment\nShelby County Unclassifiable/Attainment\nStark County Unclassifiable/Attainment\nStephenson County Unclassifiable/Attainment\nTazewell County Unclassifiable/Attainment\nUnion County Unclassifiable/Attainment\nVermilion County Unclassifiable/Attainment\nWabash County Unclassifiable/Attainment\nWarren County Unclassifiable/Attainment\nWashington County Unclassifiable/Attainment\nWayne County Unclassifiable/Attainment\nWhite County Unclassifiable/Attainment\nWhiteside County Unclassifiable/Attainment\nWilliamson County Unclassifiable/Attainment\nWinnebago County Unclassifiable/Attainment\nWoodford County Unclassifiable/Attainment\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is June 15, 2004, unless otherwise noted.\nIllinois—2008 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation Classification\nDate 1 Type Date 1 Type\nChicago-Naperville, IL-IN-WI 2 May 20, 2022. Attainment Serious.\nCook County.\nDuPage County.\nGrundy County (part):\nAux Sable Township.\nGoose Lake Township.\nKane County.\nKendall County (part):\nOswego Township.\nLake County.\nMcHenry County.\nWill County.\nSt. Louis-St. Charles-Farmington, MO-IL: 2\nMadison County, Monroe County, St. Clair County 3/1/2018 Attainment\nAdams County 3 Unclassifiable/Attainment\nAlexander County 3 Unclassifiable/Attainment\nBond County 3 Unclassifiable/Attainment\nBoone County 3 Unclassifiable/Attainment\nBrown County 3 Unclassifiable/Attainment\nBureau County 3 Unclassifiable/Attainment\nCalhoun County 3 Unclassifiable/Attainment\nCarroll County 3 Unclassifiable/Attainment\nCass County 3 Unclassifiable/Attainment\nChampaign County 3 Unclassifiable/Attainment\nChristian County 3 Unclassifiable/Attainment\nClark County 3 Unclassifiable/Attainment\nClay County 3 Unclassifiable/Attainment\nClinton County 3 Unclassifiable/Attainment\nColes County 3 Unclassifiable/Attainment\nCrawford County 3 Unclassifiable/Attainment\nCumberland County 3 Unclassifiable/Attainment\nDeKalb County 3 Unclassifiable/Attainment\nDe Witt County 3 Unclassifiable/Attainment\nDouglas County 3 Unclassifiable/Attainment\nEdgar County 3 Unclassifiable/Attainment\nEdwards County 3 Unclassifiable/Attainment\nEffingham County 3 Unclassifiable/Attainment\nFayette County 3 Unclassifiable/Attainment\nFord County 3 Unclassifiable/Attainment\nFranklin County 3 Unclassifiable/Attainment\nFulton County 3 Unclassifiable/Attainment\nGallatin County 3 Unclassifiable/Attainment\nGreene County 3 Unclassifiable/Attainment\nGrundy County (remainder) 3 Unclassifiable/Attainment\nHamilton County 3 Unclassifiable/Attainment\nHancock County 3 Unclassifiable/Attainment\nHardin County 3 Unclassifiable/Attainment\nHenderson County 3 Unclassifiable/Attainment\nHenry County 3 Unclassifiable/Attainment\nIroquois County 3 Unclassifiable/Attainment\nJackson County 3 Unclassifiable/Attainment\nJasper County 3 Unclassifiable/Attainment\nJefferson County 3 Unclassifiable/Attainment\nJersey County 3 Unclassifiable/Attainment\nJo Daviess County 3 Unclassifiable/Attainment\nJohnson County 3 Unclassifiable/Attainment\nKankakee County 3 Unclassifiable/Attainment\nKendall County (remainder) Unclassifiable/Attainment\nKnox County 3 Unclassifiable/Attainment\nLa Salle County 3 Unclassifiable/Attainment\nLawrence County 3 Unclassifiable/Attainment\nLee County 3 Unclassifiable/Attainment\nLivingston County 3 Unclassifiable/Attainment\nLogan County 3 Unclassifiable/Attainment\nMcDonough County 3 Unclassifiable/Attainment\nMcLean County 3 Unclassifiable/Attainment\nMacon County 3 Unclassifiable/Attainment\nMacoupin County 3 Unclassifiable/Attainment\nMarion County 3 Unclassifiable/Attainment\nMarshall County 3 Unclassifiable/Attainment\nMason County 3 Unclassifiable/Attainment\nMassac County 3 Unclassifiable/Attainment\nMenard County 3 Unclassifiable/Attainment\nMercer County 3 Unclassifiable/Attainment\nMontgomery County 3 Unclassifiable/Attainment\nMorgan County 3 Unclassifiable/Attainment\nMoultrie County 3 Unclassifiable/Attainment\nOgle County 3 Unclassifiable/Attainment\nPeoria County 3 Unclassifiable/Attainment\nPerry County 3 Unclassifiable/Attainment\nPiatt County 3 Unclassifiable/Attainment\nPike County 3 Unclassifiable/Attainment\nPope County 3 Unclassifiable/Attainment\nPulaski County 3 Unclassifiable/Attainment\nPutnam County 3 Unclassifiable/Attainment\nRandolph County 3 Unclassifiable/Attainment\nRichland County 3 Unclassifiable/Attainment\nRock Island County 3 Unclassifiable/Attainment\nSaline County 3 Unclassifiable/Attainment\nSangamon County 3 Unclassifiable/Attainment\nSchuyler County 3 Unclassifiable/Attainment\nScott County 3 Unclassifiable/Attainment\nShelby County 3 Unclassifiable/Attainment\nStark County 3 Unclassifiable/Attainment\nStephenson County 3 Unclassifiable/Attainment\nTazewell County 3 Unclassifiable/Attainment\nUnion County 3 Unclassifiable/Attainment\nVermilion County 3 Unclassifiable/Attainment\nWabash County 3 Unclassifiable/Attainment\nWarren County 3 Unclassifiable/Attainment\nWashington County 3 Unclassifiable/Attainment\nWayne County 3 Unclassifiable/Attainment\nWhite County 3 Unclassifiable/Attainment\nWhiteside County 3 Unclassifiable/Attainment\nWilliamson County 3 Unclassifiable/Attainment\nWinnebago County 3 Unclassifiable/Attainment\nWoodford County 3 Unclassifiable/Attainment\n1 This date is July 20, 2012, unless otherwise noted.\n2 Excludes Indian country located in each area, unless otherwise noted.\n3 Includes any Indian country in each county or area, unless otherwise specified.\n4 Attainment date is extended to July 20, 2016.\nIllinois—2015 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area 1 Designation Classification\nDate 2 Type Date 2 Type\nChicago, IL-IN-WI: 3 7/14/2021 Nonattainment 1/16/2025 Serious.\nCook County.\nDuPage County.\nGrundy County (part):\nAux Sable Township and Goose Lake Township.\nKane County.\nKendall County (part):\nOswego Township.\nLake County.\nMcHenry County.\nWill County.\nSt. Louis, MO-IL:\nMadison County.\nMonroe County July 14, 2021.3\nSt. Clair County.\nAdams County 1/16/2018 Attainment/Unclassifiable\nAlexander County 1/16/2018 Attainment/Unclassifiable\nBond County Attainment/Unclassifiable\nBoone County 1/16/2018 Attainment/Unclassifiable\nBrown County 1/16/2018 Attainment/Unclassifiable\nBureau County Attainment/Unclassifiable\nCalhoun County Attainment/Unclassifiable\nCarroll County 1/16/2018 Attainment/Unclassifiable\nCass County 1/16/2018 Attainment/Unclassifiable\nChampaign County 1/16/2018 Attainment/Unclassifiable\nChristian County 1/16/2018 Attainment/Unclassifiable\nClark County 1/16/2018 Attainment/Unclassifiable\nClay County 1/16/2018 Attainment/Unclassifiable\nClinton County Attainment/Unclassifiable\nColes County 1/16/2018 Attainment/Unclassifiable\nCrawford County 1/16/2018 Attainment/Unclassifiable\nCumberland County 1/16/2018 Attainment/Unclassifiable\nDe Kalb County Attainment/Unclassifiable\nDe Witt County 1/16/2018 Attainment/Unclassifiable\nDouglas County 1/16/2018 Attainment/Unclassifiable\nEdgar County 1/16/2018 Attainment/Unclassifiable\nEdwards County 1/16/2018 Attainment/Unclassifiable\nEffingham County 1/16/2018 Attainment/Unclassifiable\nFayette County 1/16/2018 Attainment/Unclassifiable\nFord County 1/16/2018 Attainment/Unclassifiable\nFranklin County 1/16/2018 Attainment/Unclassifiable\nFulton County 1/16/2018 Attainment/Unclassifiable\nGallatin County 1/16/2018 Attainment/Unclassifiable\nGreene County 1/16/2018 Attainment/Unclassifiable\nGrundy County (part) remainder Attainment/Unclassifiable\nHamilton County 1/16/2018 Attainment/Unclassifiable\nHancock County 1/16/2018 Attainment/Unclassifiable\nHardin County 1/16/2018 Attainment/Unclassifiable\nHenderson County 1/16/2018 Attainment/Unclassifiable\nHenry County 1/16/2018 Attainment/Unclassifiable\nIroquois County 1/16/2018 Attainment/Unclassifiable\nJackson County 1/16/2018 Attainment/Unclassifiable\nJasper County 1/16/2018 Attainment/Unclassifiable\nJefferson County 1/16/2018 Attainment/Unclassifiable\nJersey County Attainment/Unclassifiable\nJo Daviess County 1/16/2018 Attainment/Unclassifiable\nJohnson County 1/16/2018 Attainment/Unclassifiable\nKankakee County Attainment/Unclassifiable\nKendall County (part) remainder Attainment/Unclassifiable\nKnox County 1/16/2018 Attainment/Unclassifiable\nLa Salle County Attainment/Unclassifiable\nLawrence County 1/16/2018 Attainment/Unclassifiable\nLee County 1/16/2018 Attainment/Unclassifiable\nLivingston County 1/16/2018 Attainment/Unclassifiable\nLogan County 1/16/2018 Attainment/Unclassifiable\nMacon County 1/16/2018 Attainment/Unclassifiable\nMacoupin County Attainment/Unclassifiable\nMarion County Attainment/Unclassifiable\nMarshall County 1/16/2018 Attainment/Unclassifiable\nMason County 1/16/2018 Attainment/Unclassifiable\nMassac County 1/16/2018 Attainment/Unclassifiable\nMcDonough County 1/16/2018 Attainment/Unclassifiable\nMcLean County 1/16/2018 Attainment/Unclassifiable\nMenard County 1/16/2018 Attainment/Unclassifiable\nMercer County 1/16/2018 Attainment/Unclassifiable\nMontgomery County 1/16/2018 Attainment/Unclassifiable\nMorgan County 1/16/2018 Attainment/Unclassifiable\nMoultrie County 1/16/2018 Attainment/Unclassifiable\nOgle County 1/16/2018 Attainment/Unclassifiable\nPeoria County 1/16/2018 Attainment/Unclassifiable\nPerry County 1/16/2018 Attainment/Unclassifiable\nPiatt County 1/16/2018 Attainment/Unclassifiable\nPike County 1/16/2018 Attainment/Unclassifiable\nPope County 1/16/2018 Attainment/Unclassifiable\nPulaski County 1/16/2018 Attainment/Unclassifiable\nPutnam County Attainment/Unclassifiable\nRandolph County 1/16/2018 Attainment/Unclassifiable\nRichland County 1/16/2018 Attainment/Unclassifiable\nRock Island County 1/16/2018 Attainment/Unclassifiable\nSaline County 1/16/2018 Attainment/Unclassifiable\nSangamon County 1/16/2018 Attainment/Unclassifiable\nSchuyler County 1/16/2018 Attainment/Unclassifiable\nScott County 1/16/2018 Attainment/Unclassifiable\nShelby County 1/16/2018 Attainment/Unclassifiable\nStark County 1/16/2018 Attainment/Unclassifiable\nStephenson County 1/16/2018 Attainment/Unclassifiable\nTazewell County 1/16/2018 Attainment/Unclassifiable\nUnion County 1/16/2018 Attainment/Unclassifiable\nVermilion County 1/16/2018 Attainment/Unclassifiable\nWabash County 1/16/2018 Attainment/Unclassifiable\nWarren County 1/16/2018 Attainment/Unclassifiable\nWashington County 1/16/2018 Attainment/Unclassifiable\nWayne County 1/16/2018 Attainment/Unclassifiable\nWhite County 1/16/2018 Attainment/Unclassifiable\nWhiteside County 1/16/2018 Attainment/Unclassifiable\nWilliamson County 1/16/2018 Attainment/Unclassifiable\nWinnebago County 1/16/2018 Attainment/Unclassifiable\nWoodford County 1/16/2018 Attainment/Unclassifiable\n1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.\n2 This date is August 3, 2018, unless otherwise noted.\n3 EPA revised the nonattainment boundary in response to a court decision, which did not vacate any designations for the 2015 ozone NAAQS, but which remanded the designation for the identified county. Because this additional area is part of a previously designated nonattainment area, the implementation dates for the overall nonattainment area (e.g., the August 3, 2021 attainment date) remain unchanged regardless of this later designation date.\nIllinois—2008 Lead NAAQS\nDesignated area Designation for the 2008 NAAQS a\nDate 1 Type\nChicago, IL:\nCook County (part) 3/28/2018 Attainment.\nArea bounded by Damen Ave. on the west, Roosevelt Rd. on the north, the Dan Ryan Expressway on the east, and the Stevenson Expressway on the south\nGranite City, IL:\nMadison County (part) 3/28/2018 Attainment.\nArea is bounded by Granite City Township and Venice Township\nRest of State Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 December 31, 2011 unless otherwise noted.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES","Subpart C—Section 107 Attainment Status Designations"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"1774187148509eee6919139d4bce930b56b2d37cf5f25c9a7209ea4da25441d3","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.313","next":"us/40-cfr-81.315"},"notice":"GroundRules: Original legal text. Not legal advice."}