40 CFR 81.314: Illinois.

Illinois—TSP

Designated area Does not meet primary Does not meet secondary Cannot be classified Better than national standards

Cook County:

a. Lyons Township X X

b. 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

LaSalle County:

Those 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

Those 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

Madison County: Granite City Township and Nameoki Township X X

All other portions of Illinois counties X

Illinois—1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards

AQCR 65:

Fulton County X

Hancock County X

Henderson County X

Knox County X

McDonough County X

Mason County X

Peoria County X

Tazewell County X

Warren County X

Woodford County X

Lee County X

AQCR 66:

Champaign County X

Clark County X

Coles County X

Cumberland County X

De Witt County X

Douglas County X

Edgar County X

Ford County X

Iroquois County X

Livingston County X

McLean County X

Moultrie County X

Platt County X

Shelby County X

Vermilion County X

AQCR 67:

Cook County:

Bremer Twp X

Calumet Twp X

Thornton Twp X

Worth Twp X

All other Cook County twps X

Will County:

Channahon Twp X

Du Page Twp X

Joliet Twp X

Lockport Twp X

Troy Twp X

All other Will County twps X

Du Page County X

Grundy County X

Kane County X

Kankakee County X

Kendall County X

Lake County X

McHenry County X

AQCR 68:

Jo Daviess County X

AQCR 69:

Carroll County X

Henry County X

Mercer County X

Rock Island County X

Whiteside County X

AQCR 70:

Madison County:

Wood River Twp X

Alton Twp X

All other Madison twps X

Bond County X

Clinton County X

Monroe County X

Randolph County X

St. Clair County X

Washington County X

AQCR 71:

Bureau County:

Shelby Twp X

All other Bureau twps X

La Salle County X

Lee County X

Marshall County X

Putnam County X

Stark County X

AQCR 72:

Massac County X

Alexander County X

Johnson County X

Pope County X

Pulaski County X

Union County X

AQCR 73

Boone County X

De Kalb County X

Ogle County X

Stephenson X

Winnebago County X

AQCR 74:

Clay County X

Crawford County X

Edwards County X

Effingham County X

Fayette County X

Franklin County X

Gallatin County X

Hamilton County X

Hardin County X

Jackson County X

Jasper County X

Jefferson County X

Lawrence County X

Marion County X

Perry County X

Richland County X

Saline County X

Wabash County X

Wayne County X

White County X

Williamson County X

AQCR 75:

Christian County:

South Fork Twp X

All other twps X

Sangamon County:

Capital Twp X

Cooper Twp X

Cotton Hill Twp X

Rochester Twp X

Woodside Twp X

All other twps X

Adams County X

Brown County X

Calhoun County X

Cass County X

Greene County X

Jersey County X

Logan County X

Macon County X

Nacoupin County X

Menard County X

Montgomery County X

Morgan County X

Pike County X

Schuyler County X

Scott County X

Illinois—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1 Designation

Date 2 Type

Alton Township, IL 12/30/2024 Attainment.

Madison 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

Lemont, IL 5/26/2020 Attainment.

Cook County (part)

Lemont Township

Will County (part)

DuPage Township and Lockport Township

Pekin, IL 5/26/2020 Attainment.

Tazewell County (part)

Cincinnati Township and Pekin Township

Peoria County (part)

Hollis Township

Rest of State:

Adams County Attainment/Unclassifiable.

Alexander County Attainment/Unclassifiable.

Bond County Attainment/Unclassifiable.

Boone County Attainment/Unclassifiable.

Brown County Attainment/Unclassifiable.

Bureau County 9/12/2016 Attainment/Unclassifiable.

Calhoun County Attainment/Unclassifiable.

Carroll County Attainment/Unclassifiable.

Cass County Attainment/Unclassifiable.

Champaign County Attainment/Unclassifiable.

Christian County Attainment/Unclassifiable.

Clark County Attainment/Unclassifiable.

Clay County Attainment/Unclassifiable.

Clinton County Attainment/Unclassifiable.

Coles County Attainment/Unclassifiable.

Cook County (part) (remainder) Attainment/Unclassifiable.

Crawford County Attainment/Unclassifiable.

Cumberland County Attainment/Unclassifiable.

De Kalb County Attainment/Unclassifiable.

De Witt County Attainment/Unclassifiable.

Douglas County Attainment/Unclassifiable.

Du Page County Attainment/Unclassifiable.

Edgar County Attainment/Unclassifiable.

Edwards County Attainment/Unclassifiable.

Effingham County Attainment/Unclassifiable.

Fayette County Attainment/Unclassifiable.

Ford County Attainment/Unclassifiable.

Franklin County Attainment/Unclassifiable.

Fulton County Attainment/Unclassifiable.

Gallatin County Attainment/Unclassifiable.

Greene County Attainment/Unclassifiable.

Grundy County Attainment/Unclassifiable.

Hamilton County Attainment/Unclassifiable.

Hancock County Attainment/Unclassifiable.

Hardin County Attainment/Unclassifiable.

Henderson County Attainment/Unclassifiable.

Henry County Attainment/Unclassifiable.

Iroquois County Attainment/Unclassifiable.

Jackson County Attainment/Unclassifiable.

Jasper County 9/12/2016 Attainment/Unclassifiable.

Jefferson County Attainment/Unclassifiable.

Jersey County Attainment/Unclassifiable.

Jo Daviess County Attainment/Unclassifiable.

Johnson County Attainment/Unclassifiable.

Kane County Attainment/Unclassifiable.

Kankakee County Attainment/Unclassifiable.

Kendall County Attainment/Unclassifiable.

Knox County Attainment/Unclassifiable.

Lake County Attainment/Unclassifiable.

La Salle County Attainment/Unclassifiable.

Lawrence County Attainment/Unclassifiable.

Lee County Attainment/Unclassifiable.

Livingston County Attainment/Unclassifiable.

Logan County Attainment/Unclassifiable.

McDonough County Attainment/Unclassifiable.

McHenry County Attainment/Unclassifiable.

McLean County Attainment/Unclassifiable.

Macon County 4/30/2021 Attainment/Unclassifiable.

Macoupin County Attainment/Unclassifiable.

Madison County (part) (remainder) 4 Attainment/Unclassifiable.

Marion County Attainment/Unclassifiable.

Marshall County Attainment/Unclassifiable.

Mason County Attainment/Unclassifiable.

Massac County 9/12/2016 Attainment/Unclassifiable.

Menard County Attainment/Unclassifiable.

Mercer County Attainment/Unclassifiable.

Monroe County Attainment/Unclassifiable.

Montgomery County Attainment/Unclassifiable.

Morgan County Attainment/Unclassifiable.

Moultrie County Attainment/Unclassifiable.

Ogle County Attainment/Unclassifiable.

Peoria County (part) (remainder) Attainment/Unclassifiable.

Perry County Attainment/Unclassifiable.

Piatt County Attainment/Unclassifiable.

Pike County Attainment/Unclassifiable.

Pope County Attainment/Unclassifiable.

Pulaski County Attainment/Unclassifiable.

Putnam County 9/12/2016 Attainment/Unclassifiable.

Randolph County Attainment/Unclassifiable.

Richland County Attainment/Unclassifiable.

Rock Island County Attainment/Unclassifiable.

St. Clair County Attainment/Unclassifiable.

Saline County Attainment/Unclassifiable.

Sangamon County Attainment/Unclassifiable.

Schuyler County Attainment/Unclassifiable.

Scott County Attainment/Unclassifiable.

Shelby County Attainment/Unclassifiable.

Stark County Attainment/Unclassifiable.

Stephenson County Attainment/Unclassifiable.

Tazewell County (part) (remainder) Attainment/Unclassifiable.

Union County Attainment/Unclassifiable.

Vermilion County Attainment/Unclassifiable.

Wabash County Attainment/Unclassifiable.

Warren County Attainment/Unclassifiable.

Washington County Attainment/Unclassifiable.

Wayne County Attainment/Unclassifiable.

White County Attainment/Unclassifiable.

Whiteside County Attainment/Unclassifiable.

Will County (part) (remainder) Attainment/Unclassifiable.

Williamson County 3 10/15/2019 Attainment/Unclassifiable.

Winnebago County Attainment/Unclassifiable.

Woodford County Attainment/Unclassifiable.

1 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.

2 This date is April 9, 2018, unless otherwise noted.

3 Williamson County was initially designated on September 12, 2016. The initial designation was reconsidered and modified on October 15, 2019.

4 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.

Illinois—Carbon Monoxide

Designated Area Designation Classification

Date 1 Type Date 1 Type

Adams County Unclassifiable/Attainment

Alexander County Unclassifiable/Attainment

Bond County Unclassifiable/Attainment

Boone County Unclassifiable/Attainment

Brown County Unclassifiable/Attainment

Bureau County Unclassifiable/Attainment

Calhoun County Unclassifiable/Attainment

Carroll County Unclassifiable/Attainment

Cass County Unclassifiable/Attainment

Champaign County Unclassifiable/Attainment

Christian County Unclassifiable/Attainment

Clark County Unclassifiable/Attainment

Clay County Unclassifiable/Attainment

Clinton County Unclassifiable/Attainment

Coles County Unclassifiable/Attainment

Cook County Unclassifiable/Attainment

Crawford County Unclassifiable/Attainment

Cumberland County Unclassifiable/Attainment

De Kalb County Unclassifiable/Attainment

De Witt County Unclassifiable/Attainment

Douglas County Unclassifiable/Attainment

Du Page County Unclassifiable/Attainment

Edgar County Unclassifiable/Attainment

Edwards County Unclassifiable/Attainment

Effingham County Unclassifiable/Attainment

Fayette County Unclassifiable/Attainment

Ford County Unclassifiable/Attainment

Franklin County Unclassifiable/Attainment

Fulton County Unclassifiable/Attainment

Gallatin County Unclassifiable/Attainment

Greene County Unclassifiable/Attainment

Grundy County Unclassifiable/Attainment

Hamilton County Unclassifiable/Attainment

Hancock County Unclassifiable/Attainment

Hardin County Unclassifiable/Attainment

Henderson County Unclassifiable/Attainment

Henry County Unclassifiable/Attainment

Iroquois County Unclassifiable/Attainment

Jackson County Unclassifiable/Attainment

Jasper County Unclassifiable/Attainment

Jefferson County Unclassifiable/Attainment

Jersey County Unclassifiable/Attainment

Jo Daviess County Unclassifiable/Attainment

Johnson County Unclassifiable/Attainment

Kane County Unclassifiable/Attainment

Kankakee County Unclassifiable/Attainment

Kendall County Unclassifiable/Attainment

Knox County Unclassifiable/Attainment

Lake County Unclassifiable/Attainment

La Salle County Unclassifiable/Attainment

Lawrence County Unclassifiable/Attainment

Lee County Unclassifiable/Attainment

Livingston County Unclassifiable/Attainment

Logan County Unclassifiable/Attainment

Macon County Unclassifiable/Attainment

Macoupin County Unclassifiable/Attainment

Madison County Unclassifiable/Attainment

Marion County Unclassifiable/Attainment

Marshall County Unclassifiable/Attainment

Mason County Unclassifiable/Attainment

Massac County Unclassifiable/Attainment

McDonough County Unclassifiable/Attainment

McHenry County Unclassifiable/Attainment

McLean County Unclassifiable/Attainment

Menard County Unclassifiable/Attainment

Mercer County Unclassifiable/Attainment

Monroe County Unclassifiable/Attainment

Montgomery County Unclassifiable/Attainment

Morgan County Unclassifiable/Attainment

Moultrie County Unclassifiable/Attainment

Ogle County Unclassifiable/Attainment

Peoria County Unclassifiable/Attainment

Perry County Unclassifiable/Attainment

Piatt County Unclassifiable/Attainment

Pike County Unclassifiable/Attainment

Pope County Unclassifiable/Attainment

Pulaski County Unclassifiable/Attainment

Putnam County Unclassifiable/Attainment

Randolph County Unclassifiable/Attainment

Richland County Unclassifiable/Attainment

Rock Island County Unclassifiable/Attainment

St. Clair County Unclassifiable/Attainment

Saline County Unclassifiable/Attainment

Sangamon County Unclassifiable/Attainment

Schuyler County Unclassifiable/Attainment

Scott County Unclassifiable/Attainment

Shelby County Unclassifiable/Attainment

Stark County Unclassifiable/Attainment

Stephenson County Unclassifiable/Attainment

Tazewell County Unclassifiable/Attainment

Union County Unclassifiable/Attainment

Vermilion County Unclassifiable/Attainment

Wabash County Unclassifiable/Attainment

Warren County Unclassifiable/Attainment

Washington County Unclassifiable/Attainment

Wayne County Unclassifiable/Attainment

White County Unclassifiable/Attainment

Whiteside County Unclassifiable/Attainment

Will County Unclassifiable/Attainment

Williamson County Unclassifiable/Attainment

Winnebago County Unclassifiable/Attainment

Woodford County Unclassifiable/Attainment

1 This date is November 15, 1990, unless otherwise noted.

Illinois—Ozone (1-Hour Standard)3

Designated area Designation Classification

Date1 Type Date1 Type

Chicago-Gary-Lake County Area:

Cook County 11/15/1990 Nonattainment 11/15/1990 Severe-17.

Du Page County 11/15/1990 Nonattainment 11/15/1990 Severe-17.

Grundy County (part)

Aux Sable Township 11/15/1990 Nonattainment 11/15/1990 Severe-17.

Goose Lake Township 11/15/1990 Nonattainment 11/15/1990 Severe-17.

Kane County 11/15/1990 Nonattainment 11/15/1990 Severe-17.

Kendall County (part)

Oswego Township 11/15/1990 Nonattainment 11/15/1990 Severe-17.

Lake County 11/15/1990 Nonattainment 11/15/1990 Severe-17.

McHenry County 11/15/1990 Nonattainment 11/15/1990 Severe-17.

Will County 11/15/1990 Nonattainment 11/15/1990 Severe-17.

Jersey County Area:

Jersey County Attainment 2

St. Louis Area:

Madison County 5/12/2003 Attainment

Monroe County 5/12/2003 Attainment

St. Clair County 5/12/2003 Attainment

Adams County Unclassifiable/Attainment

Alexander County Unclassifiable/Attainment

Bond County Unclassifiable/Attainment

Boone County Unclassifiable/Attainment

Brown County Unclassifiable/Attainment

Bureau County Unclassifiable/Attainment

Calhoun County Unclassifiable/Attainment

Carroll County Unclassifiable/Attainment

Cass County Unclassifiable/Attainment

Champaign County Unclassifiable/Attainment

Christian County Unclassifiable/Attainment

Clark County Unclassifiable/Attainment

Clay County Unclassifiable/Attainment

Clinton County Unclassifiable/Attainment

Coles County Unclassifiable/Attainment

Crawford County Unclassifiable/Attainment

Cumberland County Unclassifiable/Attainment

De Kalb County Unclassifiable/Attainment

De Witt County Unclassifiable/Attainment

Douglas County Unclassifiable/Attainment

Edgar County Unclassifiable/Attainment

Edwards County Unclassifiable/Attainment

Effingham County Unclassifiable/Attainment

Fayette County Unclassifiable/Attainment

Ford County Unclassifiable/Attainment

Franklin County Unclassifiable/Attainment

Fulton County Unclassifiable/Attainment

Gallatin County Unclassifiable/Attainment

Greene County Unclassifiable/Attainment

Grundy County (part) All townships except Aux Sable and Goose Lake Unclassifiable/Attainment

Hamilton County Unclassifiable/Attainment

Hancock County Unclassifiable/Attainment

Hardin County Unclassifiable/Attainment

Henderson County Unclassifiable/Attainment

Henry County Unclassifiable/Attainment

Iroquois County Unclassifiable/Attainment

Jackson County Unclassifiable/Attainment

Jasper County Unclassifiable/Attainment

Jefferson County Unclassifiable/Attainment

Jo Daviess County Unclassifiable/Attainment

Johnson County Unclassifiable/Attainment

Kankakee County Unclassifiable/Attainment

Kendall County (part) All townships except Oswego Unclassifiable/Attainment

Knox County Unclassifiable/Attainment

La Salle County Unclassifiable/Attainment

Lawrence County Unclassifiable/Attainment

Lee County Unclassifiable/Attainment

Livingston County Unclassifiable/Attainment

Logan County Unclassifiable/Attainment

Macon County Unclassifiable/Attainment

Macoupin County Unclassifiable/Attainment

Marion County Unclassifiable/Attainment

Marshall County Unclassifiable/Attainment

Mason County Unclassifiable/Attainment

Massac County Unclassifiable/Attainment

McDonough County Unclassifiable/Attainment

McLean County Unclassifiable/Attainment

Menard County Unclassifiable/Attainment

Mercer County Unclassifiable/Attainment

Montgomery County Unclassifiable/Attainment

Morgan County Unclassifiable/Attainment

Moultrie County Unclassifiable/Attainment

Ogle County Unclassifiable/Attainment

Peoria County Unclassifiable/Attainment

Perry County Unclassifiable/Attainment

Piatt County Unclassifiable/Attainment

Pike County Unclassifiable/Attainment

Pope County Unclassifiable/Attainment

Pulaski County Unclassifiable/Attainment

Putnam County Unclassifiable/Attainment

Randolph County Unclassifiable/Attainment

Richland County Unclassifiable/Attainment

Rock Island County Unclassifiable/Attainment

Saline County Unclassifiable/Attainment

Sangamon County Unclassifiable/Attainment

Schuyler County Unclassifiable/Attainment

Scott County Unclassifiable/Attainment

Shelby County Unclassifiable/Attainment

Stark County Unclassifiable/Attainment

Stephenson County Unclassifiable/Attainment

Tazewell County Unclassifiable/Attainment

Union County Unclassifiable/Attainment

Vermilion County Unclassifiable/Attainment

Wabash County Unclassifiable/Attainment

Warren County Unclassifiable/Attainment

Washington County Unclassifiable/Attainment

Wayne County Unclassifiable/Attainment

White County Unclassifiable/Attainment

Whiteside County Unclassifiable/Attainment

Williamson County Unclassifiable/Attainment

Winnebago County Unclassifiable/Attainment

Woodford County Unclassifiable/Attainment

1 This date is October 18, 2000, unless otherwise noted.

2 April 13, 1995.

3 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.

Illinois—PM-10

Designated area Designation Classification

Date Type Date Type

Cook County

a. Lyons Township 11/21/2005 Attainment

b. 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

LaSalle County 10/7/1996 Attainment

Oglesby 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

Madison County

Granite City Township and Nameoki Township 5/11/1998 Attainment

Rest of State 11/15/1990 Unclassifiable

Illinois—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification

Date 1 Type Date 2 Type

Chicago-Gary-Lake County, IL-IN: 10/2/2013 Attainment.

Cook County

DuPage County

Grundy County (part):

Goose Lake and Aux Sable Townships

Kane County

Kendall County (part):

Oswego Township

Lake County

McHenry County

Will County

St. Louis, MO-IL:

Madison County 5/28/2019 Attainment

Monroe County 5/28/2019 Attainment

Randolph County (part): Baldwin Village 5/28/2019 Attainment

St. Clair County 5/28/2019 Attainment

Rest of State:

Adams County Unclassifiable/Attainment.

Alexander County Unclassifiable/Attainment.

Bond County Unclassifiable/Attainment.

Boone County Unclassifiable/Attainment.

Brown County Unclassifiable/Attainment.

Bureau County Unclassifiable/Attainment.

Calhoun County Unclassifiable/Attainment.

Carroll County Unclassifiable/Attainment.

Cass County Unclassifiable/Attainment.

Champaign County Unclassifiable/Attainment.

Christian County Unclassifiable/Attainment.

Clark County Unclassifiable/Attainment.

Clay County Unclassifiable/Attainment.

Clinton County Unclassifiable/Attainment.

Coles County Unclassifiable/Attainment.

Crawford County Unclassifiable/Attainment.

Cumberland County Unclassifiable/Attainment.

DeKalb County Unclassifiable/Attainment.

De Witt County Unclassifiable/Attainment.

Douglas County Unclassifiable/Attainment.

Edgar County Unclassifiable/Attainment.

Edwards County Unclassifiable/Attainment.

Effingham County Unclassifiable/Attainment.

Fayette County Unclassifiable/Attainment.

Ford County Unclassifiable/Attainment.

Franklin County Unclassifiable/Attainment.

Fulton County Unclassifiable/Attainment.

Gallatin County Unclassifiable/Attainment.

Greene County Unclassifiable/Attainment.

Grundy County (remainder) Unclassifiable/Attainment.

Hamilton County Unclassifiable/Attainment.

Hancock County Unclassifiable/Attainment.

Hardin County Unclassifiable/Attainment.

Henderson County Unclassifiable/Attainment.

Henry County Unclassifiable/Attainment.

Iroquois County Unclassifiable/Attainment.

Jackson County Unclassifiable/Attainment.

Jasper County Unclassifiable/Attainment.

Jefferson County Unclassifiable/Attainment.

Jersey County Unclassifiable/Attainment.

Jo Daviess County Unclassifiable/Attainment.

Johnson County Unclassifiable/Attainment.

Kankakee County Unclassifiable/Attainment.

Kendall County (remainder) Unclassifiable/Attainment.

Knox County Unclassifiable/Attainment.

La Salle County Unclassifiable/Attainment.

Lawrence County Unclassifiable/Attainment.

Lee County Unclassifiable/Attainment.

Livingston County Unclassifiable/Attainment.

Logan County Unclassifiable/Attainment.

McDonough County Unclassifiable/Attainment.

McLean County Unclassifiable/Attainment.

Macon County Unclassifiable/Attainment.

Macoupin County Unclassifiable/Attainment.

Marion County Unclassifiable/Attainment.

Marshall County Unclassifiable/Attainment.

Mason County Unclassifiable/Attainment.

Massac County Unclassifiable/Attainment.

Menard County Unclassifiable/Attainment.

Mercer County Unclassifiable/Attainment.

Montgomery County Unclassifiable/Attainment.

Morgan County Unclassifiable/Attainment.

Moultrie County Unclassifiable/Attainment.

Ogle County Unclassifiable/Attainment.

Peoria County Unclassifiable/Attainment.

Perry County Unclassifiable/Attainment.

Piatt County Unclassifiable/Attainment.

Pike County Unclassifiable/Attainment.

Pope County Unclassifiable/Attainment.

Pulaski County Unclassifiable/Attainment.

Putnam County Unclassifiable/Attainment.

Randolph County (remainder) Unclassifiable/Attainment.

Richland County Unclassifiable/Attainment.

Rock Island County Unclassifiable/Attainment.

Saline County Unclassifiable/Attainment.

Sangamon County Unclassifiable/Attainment.

Schuyler County Unclassifiable/Attainment.

Scott County Unclassifiable/Attainment.

Shelby County Unclassifiable/Attainment.

Stark County Unclassifiable/Attainment.

Stephenson County Unclassifiable/Attainment.

Tazewell County Unclassifiable/Attainment.

Union County Unclassifiable/Attainment.

Vermilion County Unclassifiable/Attainment.

Wabash County Unclassifiable/Attainment.

Warren County Unclassifiable/Attainment.

Washington County Unclassifiable/Attainment.

Wayne County Unclassifiable/Attainment.

White County Unclassifiable/Attainment.

Whiteside County Unclassifiable/Attainment.

Williamson County Unclassifiable/Attainment.

Winnebago County Unclassifiable/Attainment.

Woodford County Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after January 5, 2005, unless otherwise noted.

2 This date is July 2, 2014, unless otherwise noted.

Illinois—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1 Designation Classification

Date 2 Type Date 2 Type

Chicago, IL-IN:

Cook County Unclassifiable/Attainment.

DuPage County Unclassifiable/Attainment.

Grundy County (part) Unclassifiable/Attainment.

Goose Lake and Aux Sable Townships Unclassifiable/Attainment.

Kane County Unclassifiable/Attainment.

Kendall County (part) Unclassifiable/Attainment.

Oswego Township Unclassifiable/Attainment.

Lake County Unclassifiable/Attainment.

McHenry County Unclassifiable/Attainment.

Will County Unclassifiable/Attainment.

Davenport-Moline-Rock Island, IL:

Rock Island County Unclassifiable/Attainment.

Henry County Unclassifiable/Attainment.

Mercer County Unclassifiable/Attainment.

St. Louis, MO-IL:

Madison County Unclassifiable/Attainment.

Monroe County Unclassifiable/Attainment.

Randolph County (part) Unclassifiable/Attainment.

Baldwin Village Unclassifiable/Attainment.

St. Clair County Unclassifiable/Attainment.

Rest of State:

Adams County Unclassifiable/Attainment.

Alexander County Unclassifiable/Attainment.

Bond County Unclassifiable/Attainment.

Boone County Unclassifiable/Attainment.

Brown County Unclassifiable/Attainment.

Bureau County Unclassifiable/Attainment.

Calhoun County Unclassifiable/Attainment.

Carroll County Unclassifiable/Attainment.

Cass County Unclassifiable/Attainment.

Champaign County Unclassifiable/Attainment.

Christian County Unclassifiable/Attainment.

Clark County Unclassifiable/Attainment.

Clay County Unclassifiable/Attainment.

Clinton County Unclassifiable/Attainment.

Coles County Unclassifiable/Attainment.

Crawford County Unclassifiable/Attainment.

Cumberland County Unclassifiable/Attainment.

DeKalb County Unclassifiable/Attainment.

De Witt County Unclassifiable/Attainment.

Douglas County Unclassifiable/Attainment.

Edgar County Unclassifiable/Attainment.

Edwards County Unclassifiable/Attainment.

Effingham County Unclassifiable/Attainment.

Fayette County Unclassifiable/Attainment.

Ford County Unclassifiable/Attainment.

Franklin County Unclassifiable/Attainment.

Fulton County Unclassifiable/Attainment.

Gallatin County Unclassifiable/Attainment.

Greene County Unclassifiable/Attainment.

Grundy County (remainder) Unclassifiable/Attainment.

Hamilton County Unclassifiable/Attainment.

Hancock County Unclassifiable/Attainment.

Hardin County Unclassifiable/Attainment.

Henderson County Unclassifiable/Attainment.

Iroquois County Unclassifiable/Attainment.

Jackson County Unclassifiable/Attainment.

Jasper County Unclassifiable/Attainment.

Jefferson County Unclassifiable/Attainment.

Jersey County Unclassifiable/Attainment.

Jo Daviess County Unclassifiable/Attainment.

Johnson County Unclassifiable/Attainment.

Kankakee County Unclassifiable/Attainment.

Kendall County (remainder) Unclassifiable/Attainment.

Knox County Unclassifiable/Attainment.

La Salle County Unclassifiable/Attainment.

Lawrence County Unclassifiable/Attainment.

Lee County Unclassifiable/Attainment.

Livingston County Unclassifiable/Attainment.

Logan County Unclassifiable/Attainment.

McDonough County Unclassifiable/Attainment.

McLean County Unclassifiable/Attainment.

Macon County Unclassifiable/Attainment.

Macoupin County Unclassifiable/Attainment.

Marion County Unclassifiable/Attainment.

Marshall County Unclassifiable/Attainment.

Mason County Unclassifiable/Attainment.

Massac County Unclassifiable/Attainment.

Menard County Unclassifiable/Attainment.

Montgomery County Unclassifiable/Attainment.

Morgan County Unclassifiable/Attainment.

Moultrie County Unclassifiable/Attainment.

Ogle County Unclassifiable/Attainment.

Peoria County Unclassifiable/Attainment.

Perry County Unclassifiable/Attainment.

Piatt County Unclassifiable/Attainment.

Pike County Unclassifiable/Attainment.

Pope County Unclassifiable/Attainment.

Pulaski County Unclassifiable/Attainment.

Putnam County Unclassifiable/Attainment.

Randolph County (remainder) Unclassifiable/Attainment.

Richland County Unclassifiable/Attainment.

Saline County Unclassifiable/Attainment.

Sangamon County Unclassifiable/Attainment.

Schuyler County Unclassifiable/Attainment.

Scott County Unclassifiable/Attainment.

Shelby County Unclassifiable/Attainment.

Stark County Unclassifiable/Attainment.

Stephenson County Unclassifiable/Attainment.

Tazewell County Unclassifiable/Attainment.

Union County Unclassifiable/Attainment.

Vermilion County Unclassifiable/Attainment.

Wabash County Unclassifiable/Attainment.

Warren County Unclassifiable/Attainment.

Washington County Unclassifiable/Attainment.

Wayne County Unclassifiable/Attainment.

White County Unclassifiable/Attainment.

Whiteside County Unclassifiable/Attainment.

Williamson County Unclassifiable/Attainment.

Winnebago County Unclassifiable/Attainment.

Woodford County Unclassifiable/Attainment.

1 Includes Indian Country located in each county or area, except as otherwise specified.

2 This date is January 28, 2019, unless otherwise noted.

Illinois—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification

Date 1 Type Date Type

Statewide:

Adams County Unclassifiable/Attainment.

Alexander County Unclassifiable/Attainment.

Bond County Unclassifiable/Attainment.

Boone County Unclassifiable/Attainment.

Brown County Unclassifiable/Attainment.

Bureau County Unclassifiable/Attainment.

Calhoun County Unclassifiable/Attainment.

Carroll County Unclassifiable/Attainment.

Cass County Unclassifiable/Attainment.

Champaign County Unclassifiable/Attainment.

Christian County Unclassifiable/Attainment.

Clark County Unclassifiable/Attainment.

Clay County Unclassifiable/Attainment.

Clinton County Unclassifiable/Attainment.

Coles County Unclassifiable/Attainment.

Cook County Unclassifiable/Attainment.

Crawford County Unclassifiable/Attainment.

Cumberland County Unclassifiable/Attainment.

DeKalb County Unclassifiable/Attainment.

De Witt County Unclassifiable/Attainment.

Douglas County Unclassifiable/Attainment.

DuPage County Unclassifiable/Attainment.

Edgar County Unclassifiable/Attainment.

Edwards County Unclassifiable/Attainment.

Effingham County Unclassifiable/Attainment.

Fayette County Unclassifiable/Attainment.

Ford County Unclassifiable/Attainment.

Franklin County Unclassifiable/Attainment.

Fulton County Unclassifiable/Attainment.

Gallatin County Unclassifiable/Attainment.

Greene County Unclassifiable/Attainment.

Grundy County Unclassifiable/Attainment.

Hamilton County Unclassifiable/Attainment.

Hancock County Unclassifiable/Attainment.

Hardin County Unclassifiable/Attainment.

Henderson County Unclassifiable/Attainment.

Henry County Unclassifiable/Attainment.

Iroquois County Unclassifiable/Attainment.

Jackson County Unclassifiable/Attainment.

Jasper County Unclassifiable/Attainment.

Jefferson County Unclassifiable/Attainment.

Jersey County Unclassifiable/Attainment.

Jo Daviess County Unclassifiable/Attainment.

Johnson County Unclassifiable/Attainment.

Kane County Unclassifiable/Attainment.

Kankakee County Unclassifiable/Attainment.

Kendall County Unclassifiable/Attainment.

Knox County Unclassifiable/Attainment.

La Salle County Unclassifiable/Attainment.

Lake County Unclassifiable/Attainment.

Lawrence County Unclassifiable/Attainment.

Lee County Unclassifiable/Attainment.

Livingston County Unclassifiable/Attainment.

Logan County Unclassifiable/Attainment.

McDonough County Unclassifiable/Attainment.

McHenry County Unclassifiable/Attainment.

McLean County Unclassifiable/Attainment.

Macon County Unclassifiable/Attainment.

Macoupin County Unclassifiable/Attainment.

Madison County Unclassifiable/Attainment.

Marion County Unclassifiable/Attainment.

Marshall County Unclassifiable/Attainment.

Mason County Unclassifiable/Attainment.

Massac County Unclassifiable/Attainment.

Menard County Unclassifiable/Attainment.

Mercer County Unclassifiable/Attainment.

Monroe County Unclassifiable/Attainment.

Montgomery County Unclassifiable/Attainment.

Morgan County Unclassifiable/Attainment.

Moultrie County Unclassifiable/Attainment.

Ogle County Unclassifiable/Attainment.

Peoria County Unclassifiable/Attainment.

Perry County Unclassifiable/Attainment.

Piatt County Unclassifiable/Attainment.

Pike County Unclassifiable/Attainment.

Pope County Unclassifiable/Attainment.

Pulaski County Unclassifiable/Attainment.

Putnam County Unclassifiable/Attainment.

Randolph County Unclassifiable/Attainment.

Richland County Unclassifiable/Attainment.

Rock Island County Unclassifiable/Attainment.

St. Clair County Unclassifiable/Attainment.

Saline County Unclassifiable/Attainment.

Sangamon County Unclassifiable/Attainment.

Schuyler County Unclassifiable/Attainment.

Scott County Unclassifiable/Attainment.

Shelby County Unclassifiable/Attainment.

Stark County Unclassifiable/Attainment.

Stephenson County Unclassifiable/Attainment.

Tazewell County Unclassifiable/Attainment.

Union County Unclassifiable/Attainment.

Vermilion County Unclassifiable/Attainment.

Wabash County Unclassifiable/Attainment.

Warren County Unclassifiable/Attainment.

Washington County Unclassifiable/Attainment.

Wayne County Unclassifiable/Attainment.

White County Unclassifiable/Attainment.

Whiteside County Unclassifiable/Attainment.

Will County Unclassifiable/Attainment.

Williamson County Unclassifiable/Attainment.

Winnebago County Unclassifiable/Attainment.

Woodford County Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after January 5, 2005, unless otherwise noted.

Illinois—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification

Date 1 Type Date Type

Statewide:

Adams County Unclassifiable/Attainment

Alexander County Unclassifiable/Attainment

Bond County Unclassifiable/Attainment

Boone County Unclassifiable/Attainment

Brown County Unclassifiable/Attainment

Bureau County Unclassifiable/Attainment

Calhoun County Unclassifiable/Attainment

Carroll County Unclassifiable/Attainment

Cass County Unclassifiable/Attainment

Champaign County Unclassifiable/Attainment

Christian County Unclassifiable/Attainment

Clark County Unclassifiable/Attainment

Clay County Unclassifiable/Attainment

Clinton County Unclassifiable/Attainment

Coles County Unclassifiable/Attainment

Cook County Unclassifiable/Attainment

Crawford County Unclassifiable/Attainment

Cumberland County Unclassifiable/Attainment

DeKalb County Unclassifiable/Attainment

De Witt County Unclassifiable/Attainment

Douglas County Unclassifiable/Attainment

DuPage County Unclassifiable/Attainment

Edgar County Unclassifiable/Attainment

Edwards County Unclassifiable/Attainment

Effingham County Unclassifiable/Attainment

Fayette County Unclassifiable/Attainment

Ford County Unclassifiable/Attainment

Franklin County Unclassifiable/Attainment

Fulton County Unclassifiable/Attainment

Gallatin County Unclassifiable/Attainment

Greene County Unclassifiable/Attainment

Grundy County Unclassifiable/Attainment

Hamilton County Unclassifiable/Attainment

Hancock County Unclassifiable/Attainment

Hardin County Unclassifiable/Attainment

Henderson County Unclassifiable/Attainment

Henry County Unclassifiable/Attainment

Iroquois County Unclassifiable/Attainment

Jackson County Unclassifiable/Attainment

Jasper County Unclassifiable/Attainment

Jefferson County Unclassifiable/Attainment

Jersey County Unclassifiable/Attainment

Jo Daviess County Unclassifiable/Attainment

Johnson County Unclassifiable/Attainment

Kane County Unclassifiable/Attainment

Kankakee County Unclassifiable/Attainment

Kendall County Unclassifiable/Attainment

Knox County Unclassifiable/Attainment

La Salle County Unclassifiable/Attainment

Lake County Unclassifiable/Attainment

Lawrence County Unclassifiable/Attainment

Lee County Unclassifiable/Attainment

Livingston County Unclassifiable/Attainment

Logan County Unclassifiable/Attainment

McDonough County Unclassifiable/Attainment

McHenry County Unclassifiable/Attainment

McLean County Unclassifiable/Attainment

Macon County Unclassifiable/Attainment

Macoupin County Unclassifiable/Attainment

Madison County Unclassifiable/Attainment

Marion County Unclassifiable/Attainment

Marshall County Unclassifiable/Attainment

Mason County Unclassifiable/Attainment

Massac County Unclassifiable/Attainment

Menard County Unclassifiable/Attainment

Mercer County Unclassifiable/Attainment

Monroe County Unclassifiable/Attainment

Montgomery County Unclassifiable/Attainment

Morgan County Unclassifiable/Attainment

Moultrie County Unclassifiable/Attainment

Ogle County Unclassifiable/Attainment

Peoria County Unclassifiable/Attainment

Perry County Unclassifiable/Attainment

Piatt County Unclassifiable/Attainment

Pike County Unclassifiable/Attainment

Pope County Unclassifiable/Attainment

Pulaski County Unclassifiable/Attainment

Putnam County Unclassifiable/Attainment

Randolph County Unclassifiable/Attainment

Richland County Unclassifiable/Attainment

Rock Island County Unclassifiable/Attainment

St. Clair County Unclassifiable/Attainment

Saline County Unclassifiable/Attainment

Sangamon County Unclassifiable/Attainment

Schuyler County Unclassifiable/Attainment

Scott County Unclassifiable/Attainment

Shelby County Unclassifiable/Attainment

Stark County Unclassifiable/Attainment

Stephenson County Unclassifiable/Attainment

Tazewell County Unclassifiable/Attainment

Union County Unclassifiable/Attainment

Vermilion County Unclassifiable/Attainment

Wabash County Unclassifiable/Attainment

Warren County Unclassifiable/Attainment

Washington County Unclassifiable/Attainment

Wayne County Unclassifiable/Attainment

White County Unclassifiable/Attainment

Whiteside County Unclassifiable/Attainment

Will County Unclassifiable/Attainment

Williamson County Unclassifiable/Attainment

Winnebago County Unclassifiable/Attainment

Woodford County Unclassifiable/Attainment

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 30 days after November 13, 2009, unless otherwise noted.

Illinois—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards

AQCR 65:

Fulton County X

Hancock County X

Henderson County X

Knox County X

McDonough County X

Mason County X

Peoria County X

Tazewell County X

Warren County X

Woodford County X

Lee County X

AQCR 66:

Champaign County X

Clark County X

Coles County X

Cumberland County X

De Witt County X

Douglas County X

Edgar County X

Ford County X

Iroquois County X

Livingston County X

McLean County X

Moultrie County X

Piatt County X

Shelby County X

Vermilion County X

AQCR 67:

Cook County X

Du Page County X

Grundy County X

Kane County X

Kankakee County X

Kendall County X

Lake County X

McHenry County X

Will County X

AQCR 68:

Jo Daviess County X

AQCR 69:

Carroll County X

Henry County X

Mercer County X

Rock Island County X

Whiteside County X

AQCR 70:

Bond County X

Clinton County X

Madison County X

Monroe County X

Randolph County X

St. Clair County X

Washington County X

AQCR 71:

Bureau County X

La Salle County X

Lee County X

Marshall County X

Putnam County X

Stark County X

AQCR 72:

Alexander County X

Johnson County X

Massac County X

Pope County X

Pulaski County X

Union County X

AQCR 73:

Boone County X

De Kalb County X

Ogle County X

Stephenson County X

Winnebago County X

AQCR 74:

Clay County X

Crawford County X

Edwards County X

Effingham County X

Fayette County X

Franklin County X

Gallatin County X

Hamilton County X

Hardin County X

Jackson County X

Jasper County X

Jefferson County X

Lawrence County X

Marion County X

Perry County X

Richland County X

Saline County X

Wabash County X

Wayne County X

White County X

Williamson County X

AQCR 75:

Adams County X

Brown County X

Calhoun County X

Cass County X

Christian County X

Greene County X

Jersey County X

Logan County X

Macon County X

Macoupin County X

Menard County X

Montgomery County X

Morgan County X

Pike County X

Sangamon County X

Schuyler County X

Scott County X

Illinois—NO2 (2010 1-Hour Standard)

Designated area Designation a

Date 1 Type

Adams County Unclassifiable/Attainment.

Alexander County Unclassifiable/Attainment.

Bond County Unclassifiable/Attainment.

Boone County Unclassifiable/Attainment.

Brown County Unclassifiable/Attainment.

Bureau County Unclassifiable/Attainment.

Calhoun County Unclassifiable/Attainment.

Carroll County Unclassifiable/Attainment.

Cass County Unclassifiable/Attainment.

Champaign County Unclassifiable/Attainment.

Christian County Unclassifiable/Attainment.

Clark County Unclassifiable/Attainment.

Clay County Unclassifiable/Attainment.

Clinton County Unclassifiable/Attainment.

Coles County Unclassifiable/Attainment.

Cook County Unclassifiable/Attainment.

Crawford County Unclassifiable/Attainment.

Cumberland County Unclassifiable/Attainment.

DeKalb County Unclassifiable/Attainment.

De Witt County Unclassifiable/Attainment.

Douglas County Unclassifiable/Attainment.

DuPage County Unclassifiable/Attainment.

Edgar County Unclassifiable/Attainment.

Edwards County Unclassifiable/Attainment.

Effingham County Unclassifiable/Attainment.

Fayette County Unclassifiable/Attainment.

Ford County Unclassifiable/Attainment.

Franklin County Unclassifiable/Attainment.

Fulton County Unclassifiable/Attainment.

Gallatin County Unclassifiable/Attainment.

Greene County Unclassifiable/Attainment.

Grundy County Unclassifiable/Attainment.

Hamilton County Unclassifiable/Attainment.

Hancock County Unclassifiable/Attainment.

Hardin County Unclassifiable/Attainment.

Henderson County Unclassifiable/Attainment.

Henry County Unclassifiable/Attainment.

Iroquois County Unclassifiable/Attainment.

Jackson County Unclassifiable/Attainment.

Jasper County Unclassifiable/Attainment.

Jefferson County Unclassifiable/Attainment.

Jersey County Unclassifiable/Attainment.

Jo Daviess County Unclassifiable/Attainment.

Johnson County Unclassifiable/Attainment.

Kane County Unclassifiable/Attainment.

Kankakee County Unclassifiable/Attainment.

Kendall County Unclassifiable/Attainment.

Knox County Unclassifiable/Attainment.

La Salle County Unclassifiable/Attainment.

Lake County Unclassifiable/Attainment.

Lawrence County Unclassifiable/Attainment.

Lee County Unclassifiable/Attainment.

Livingston County Unclassifiable/Attainment.

Logan County Unclassifiable/Attainment.

Madison County Unclassifiable/Attainment.

McDonough County Unclassifiable/Attainment.

McLean County Unclassifiable/Attainment.

Macon County Unclassifiable/Attainment.

Macoupin County Unclassifiable/Attainment.

Marion County Unclassifiable/Attainment.

Marshall County Unclassifiable/Attainment.

Mason County Unclassifiable/Attainment.

Massac County Unclassifiable/Attainment.

McHenry County Unclassifiable/Attainment.

Menard County Unclassifiable/Attainment.

Mercer County Unclassifiable/Attainment.

Monroe County Unclassifiable/Attainment.

Montgomery County Unclassifiable/Attainment.

Morgan County Unclassifiable/Attainment.

Moultrie County Unclassifiable/Attainment.

Ogle County Unclassifiable/Attainment.

Peoria County Unclassifiable/Attainment.

Perry County Unclassifiable/Attainment.

Piatt County Unclassifiable/Attainment.

Pike County Unclassifiable/Attainment.

Pope County Unclassifiable/Attainment.

Pulaski County Unclassifiable/Attainment.

Putnam County Unclassifiable/Attainment.

Randolph County Unclassifiable/Attainment.

Richland County Unclassifiable/Attainment.

Rock Island County Unclassifiable/Attainment.

St. Clair County Unclassifiable/Attainment.

Saline County Unclassifiable/Attainment.

Sangamon County Unclassifiable/Attainment.

Schuyler County Unclassifiable/Attainment.

Scott County Unclassifiable/Attainment.

Shelby County Unclassifiable/Attainment.

Stark County Unclassifiable/Attainment.

Stephenson County Unclassifiable/Attainment.

Tazewell County Unclassifiable/Attainment.

Union County Unclassifiable/Attainment.

Vermilion County Unclassifiable/Attainment.

Wabash County Unclassifiable/Attainment.

Warren County Unclassifiable/Attainment.

Washington County Unclassifiable/Attainment.

Wayne County Unclassifiable/Attainment.

White County Unclassifiable/Attainment.

Whiteside County Unclassifiable/Attainment.

Will County Unclassifiable/Attainment.

Williamson County Unclassifiable/Attainment.

Winnebago County Unclassifiable/Attainment.

Woodford County Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after October 31, 2011, unless otherwise noted.

Illinois—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation a Category/classification

Date 1 Type Date 1 Type

Chicago-Gary-Lake County, IL-IN:

Cook County 8/13/2012

DuPage County Attainment

Grundy County (part)

Aux Sable Township

Goose Lake Township

Kane County

Kendall County (part)

Oswego Township

Lake County

McHenry County

Will County

St. Louis, MO-IL:

Jersey County 6/12/2012 Attainment

Madison County 6/12/2012 Attainment

Monroe County 6/12/2012 Attainment

St. Clair County 6/12/2012 Attainment

Rest of State

Adams County Unclassifiable/Attainment

Alexander County Unclassifiable/Attainment

Bond County Unclassifiable/Attainment

Boone County Unclassifiable/Attainment

Brown County Unclassifiable/Attainment

Bureau County Unclassifiable/Attainment

Calhoun County Unclassifiable/Attainment

Carroll County Unclassifiable/Attainment

Cass County Unclassifiable/Attainment

Champaign County Unclassifiable/Attainment

Christian County Unclassifiable/Attainment

Clark County Unclassifiable/Attainment

Clay County Unclassifiable/Attainment

Clinton County Unclassifiable/Attainment

Coles County Unclassifiable/Attainment

Crawford County Unclassifiable/Attainment

Cumberland County Unclassifiable/Attainment

De Witt County Unclassifiable/Attainment

DeKalb County Unclassifiable/Attainment

Douglas County Unclassifiable/Attainment

Edgar County Unclassifiable/Attainment

Edwards County Unclassifiable/Attainment

Effingham County Unclassifiable/Attainment

Fayette County Unclassifiable/Attainment

Ford County Unclassifiable/Attainment

Franklin County Unclassifiable/Attainment

Fulton County Unclassifiable/Attainment

Gallatin County Unclassifiable/Attainment

Greene County Unclassifiable/Attainment

Grundy County (part) Unclassifiable/Attainment

All townships except Aux Sable and Goose Lake.

Hamilton County Unclassifiable/Attainment

Hancock County Unclassifiable/Attainment

Hardin County Unclassifiable/Attainment

Henderson County Unclassifiable/Attainment

Henry County Unclassifiable/Attainment

Iroquois County Unclassifiable/Attainment

Jackson County Unclassifiable/Attainment

Jasper County Unclassifiable/Attainment

Jefferson County Unclassifiable/Attainment

Jo Daviess County Unclassifiable/Attainment

Johnson County Unclassifiable/Attainment

Kankakee County Unclassifiable/Attainment

Kendall County (part) Unclassifiable/Attainment

All townships except Oswego

Knox County Unclassifiable/Attainment

La Salle County Unclassifiable/Attainment

Lawrence County Unclassifiable/Attainment

Lee County Unclassifiable/Attainment

Livingston County Unclassifiable/Attainment

Logan County Unclassifiable/Attainment

Macon County Unclassifiable/Attainment

Macoupin County Unclassifiable/Attainment

Marion County Unclassifiable/Attainment

Marshall County Unclassifiable/Attainment

Mason County Unclassifiable/Attainment

Massac County Unclassifiable/Attainment

McDonough County Unclassifiable/Attainment

McLean County Unclassifiable/Attainment

Menard County Unclassifiable/Attainment

Mercer County Unclassifiable/Attainment

Montgomery County Unclassifiable/Attainment

Morgan County Unclassifiable/Attainment

Moultrie County Unclassifiable/Attainment

Ogle County Unclassifiable/Attainment

Peoria County Unclassifiable/Attainment

Perry County Unclassifiable/Attainment

Piatt County Unclassifiable/Attainment

Pike County Unclassifiable/Attainment

Pope County Unclassifiable/Attainment

Pulaski County Unclassifiable/Attainment

Putnam County Unclassifiable/Attainment

Randolph County Unclassifiable/Attainment

Richland County Unclassifiable/Attainment

Rock Island County Unclassifiable/Attainment

Saline County Unclassifiable/Attainment

Sangamon County Unclassifiable/Attainment

Schuyler County Unclassifiable/Attainment

Scott County Unclassifiable/Attainment

Shelby County Unclassifiable/Attainment

Stark County Unclassifiable/Attainment

Stephenson County Unclassifiable/Attainment

Tazewell County Unclassifiable/Attainment

Union County Unclassifiable/Attainment

Vermilion County Unclassifiable/Attainment

Wabash County Unclassifiable/Attainment

Warren County Unclassifiable/Attainment

Washington County Unclassifiable/Attainment

Wayne County Unclassifiable/Attainment

White County Unclassifiable/Attainment

Whiteside County Unclassifiable/Attainment

Williamson County Unclassifiable/Attainment

Winnebago County Unclassifiable/Attainment

Woodford County Unclassifiable/Attainment

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is June 15, 2004, unless otherwise noted.

Illinois—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation Classification

Date 1 Type Date 1 Type

Chicago-Naperville, IL-IN-WI 2 May 20, 2022. Attainment Serious.

Cook County.

DuPage County.

Grundy County (part):

Aux Sable Township.

Goose Lake Township.

Kane County.

Kendall County (part):

Oswego Township.

Lake County.

McHenry County.

Will County.

St. Louis-St. Charles-Farmington, MO-IL: 2

Madison County, Monroe County, St. Clair County 3/1/2018 Attainment

Adams County 3 Unclassifiable/Attainment

Alexander County 3 Unclassifiable/Attainment

Bond County 3 Unclassifiable/Attainment

Boone County 3 Unclassifiable/Attainment

Brown County 3 Unclassifiable/Attainment

Bureau County 3 Unclassifiable/Attainment

Calhoun County 3 Unclassifiable/Attainment

Carroll County 3 Unclassifiable/Attainment

Cass County 3 Unclassifiable/Attainment

Champaign County 3 Unclassifiable/Attainment

Christian County 3 Unclassifiable/Attainment

Clark County 3 Unclassifiable/Attainment

Clay County 3 Unclassifiable/Attainment

Clinton County 3 Unclassifiable/Attainment

Coles County 3 Unclassifiable/Attainment

Crawford County 3 Unclassifiable/Attainment

Cumberland County 3 Unclassifiable/Attainment

DeKalb County 3 Unclassifiable/Attainment

De Witt County 3 Unclassifiable/Attainment

Douglas County 3 Unclassifiable/Attainment

Edgar County 3 Unclassifiable/Attainment

Edwards County 3 Unclassifiable/Attainment

Effingham County 3 Unclassifiable/Attainment

Fayette County 3 Unclassifiable/Attainment

Ford County 3 Unclassifiable/Attainment

Franklin County 3 Unclassifiable/Attainment

Fulton County 3 Unclassifiable/Attainment

Gallatin County 3 Unclassifiable/Attainment

Greene County 3 Unclassifiable/Attainment

Grundy County (remainder) 3 Unclassifiable/Attainment

Hamilton County 3 Unclassifiable/Attainment

Hancock County 3 Unclassifiable/Attainment

Hardin County 3 Unclassifiable/Attainment

Henderson County 3 Unclassifiable/Attainment

Henry County 3 Unclassifiable/Attainment

Iroquois County 3 Unclassifiable/Attainment

Jackson County 3 Unclassifiable/Attainment

Jasper County 3 Unclassifiable/Attainment

Jefferson County 3 Unclassifiable/Attainment

Jersey County 3 Unclassifiable/Attainment

Jo Daviess County 3 Unclassifiable/Attainment

Johnson County 3 Unclassifiable/Attainment

Kankakee County 3 Unclassifiable/Attainment

Kendall County (remainder) Unclassifiable/Attainment

Knox County 3 Unclassifiable/Attainment

La Salle County 3 Unclassifiable/Attainment

Lawrence County 3 Unclassifiable/Attainment

Lee County 3 Unclassifiable/Attainment

Livingston County 3 Unclassifiable/Attainment

Logan County 3 Unclassifiable/Attainment

McDonough County 3 Unclassifiable/Attainment

McLean County 3 Unclassifiable/Attainment

Macon County 3 Unclassifiable/Attainment

Macoupin County 3 Unclassifiable/Attainment

Marion County 3 Unclassifiable/Attainment

Marshall County 3 Unclassifiable/Attainment

Mason County 3 Unclassifiable/Attainment

Massac County 3 Unclassifiable/Attainment

Menard County 3 Unclassifiable/Attainment

Mercer County 3 Unclassifiable/Attainment

Montgomery County 3 Unclassifiable/Attainment

Morgan County 3 Unclassifiable/Attainment

Moultrie County 3 Unclassifiable/Attainment

Ogle County 3 Unclassifiable/Attainment

Peoria County 3 Unclassifiable/Attainment

Perry County 3 Unclassifiable/Attainment

Piatt County 3 Unclassifiable/Attainment

Pike County 3 Unclassifiable/Attainment

Pope County 3 Unclassifiable/Attainment

Pulaski County 3 Unclassifiable/Attainment

Putnam County 3 Unclassifiable/Attainment

Randolph County 3 Unclassifiable/Attainment

Richland County 3 Unclassifiable/Attainment

Rock Island County 3 Unclassifiable/Attainment

Saline County 3 Unclassifiable/Attainment

Sangamon County 3 Unclassifiable/Attainment

Schuyler County 3 Unclassifiable/Attainment

Scott County 3 Unclassifiable/Attainment

Shelby County 3 Unclassifiable/Attainment

Stark County 3 Unclassifiable/Attainment

Stephenson County 3 Unclassifiable/Attainment

Tazewell County 3 Unclassifiable/Attainment

Union County 3 Unclassifiable/Attainment

Vermilion County 3 Unclassifiable/Attainment

Wabash County 3 Unclassifiable/Attainment

Warren County 3 Unclassifiable/Attainment

Washington County 3 Unclassifiable/Attainment

Wayne County 3 Unclassifiable/Attainment

White County 3 Unclassifiable/Attainment

Whiteside County 3 Unclassifiable/Attainment

Williamson County 3 Unclassifiable/Attainment

Winnebago County 3 Unclassifiable/Attainment

Woodford County 3 Unclassifiable/Attainment

1 This date is July 20, 2012, unless otherwise noted.

2 Excludes Indian country located in each area, unless otherwise noted.

3 Includes any Indian country in each county or area, unless otherwise specified.

4 Attainment date is extended to July 20, 2016.

Illinois—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1 Designation Classification

Date 2 Type Date 2 Type

Chicago, IL-IN-WI: 3 7/14/2021 Nonattainment 1/16/2025 Serious.

Cook County.

DuPage County.

Grundy County (part):

Aux Sable Township and Goose Lake Township.

Kane County.

Kendall County (part):

Oswego Township.

Lake County.

McHenry County.

Will County.

St. Louis, MO-IL:

Madison County.

Monroe County July 14, 2021.3

St. Clair County.

Adams County 1/16/2018 Attainment/Unclassifiable

Alexander County 1/16/2018 Attainment/Unclassifiable

Bond County Attainment/Unclassifiable

Boone County 1/16/2018 Attainment/Unclassifiable

Brown County 1/16/2018 Attainment/Unclassifiable

Bureau County Attainment/Unclassifiable

Calhoun County Attainment/Unclassifiable

Carroll County 1/16/2018 Attainment/Unclassifiable

Cass County 1/16/2018 Attainment/Unclassifiable

Champaign County 1/16/2018 Attainment/Unclassifiable

Christian County 1/16/2018 Attainment/Unclassifiable

Clark County 1/16/2018 Attainment/Unclassifiable

Clay County 1/16/2018 Attainment/Unclassifiable

Clinton County Attainment/Unclassifiable

Coles County 1/16/2018 Attainment/Unclassifiable

Crawford County 1/16/2018 Attainment/Unclassifiable

Cumberland County 1/16/2018 Attainment/Unclassifiable

De Kalb County Attainment/Unclassifiable

De Witt County 1/16/2018 Attainment/Unclassifiable

Douglas County 1/16/2018 Attainment/Unclassifiable

Edgar County 1/16/2018 Attainment/Unclassifiable

Edwards County 1/16/2018 Attainment/Unclassifiable

Effingham County 1/16/2018 Attainment/Unclassifiable

Fayette County 1/16/2018 Attainment/Unclassifiable

Ford County 1/16/2018 Attainment/Unclassifiable

Franklin County 1/16/2018 Attainment/Unclassifiable

Fulton County 1/16/2018 Attainment/Unclassifiable

Gallatin County 1/16/2018 Attainment/Unclassifiable

Greene County 1/16/2018 Attainment/Unclassifiable

Grundy County (part) remainder Attainment/Unclassifiable

Hamilton County 1/16/2018 Attainment/Unclassifiable

Hancock County 1/16/2018 Attainment/Unclassifiable

Hardin County 1/16/2018 Attainment/Unclassifiable

Henderson County 1/16/2018 Attainment/Unclassifiable

Henry County 1/16/2018 Attainment/Unclassifiable

Iroquois County 1/16/2018 Attainment/Unclassifiable

Jackson County 1/16/2018 Attainment/Unclassifiable

Jasper County 1/16/2018 Attainment/Unclassifiable

Jefferson County 1/16/2018 Attainment/Unclassifiable

Jersey County Attainment/Unclassifiable

Jo Daviess County 1/16/2018 Attainment/Unclassifiable

Johnson County 1/16/2018 Attainment/Unclassifiable

Kankakee County Attainment/Unclassifiable

Kendall County (part) remainder Attainment/Unclassifiable

Knox County 1/16/2018 Attainment/Unclassifiable

La Salle County Attainment/Unclassifiable

Lawrence County 1/16/2018 Attainment/Unclassifiable

Lee County 1/16/2018 Attainment/Unclassifiable

Livingston County 1/16/2018 Attainment/Unclassifiable

Logan County 1/16/2018 Attainment/Unclassifiable

Macon County 1/16/2018 Attainment/Unclassifiable

Macoupin County Attainment/Unclassifiable

Marion County Attainment/Unclassifiable

Marshall County 1/16/2018 Attainment/Unclassifiable

Mason County 1/16/2018 Attainment/Unclassifiable

Massac County 1/16/2018 Attainment/Unclassifiable

McDonough County 1/16/2018 Attainment/Unclassifiable

McLean County 1/16/2018 Attainment/Unclassifiable

Menard County 1/16/2018 Attainment/Unclassifiable

Mercer County 1/16/2018 Attainment/Unclassifiable

Montgomery County 1/16/2018 Attainment/Unclassifiable

Morgan County 1/16/2018 Attainment/Unclassifiable

Moultrie County 1/16/2018 Attainment/Unclassifiable

Ogle County 1/16/2018 Attainment/Unclassifiable

Peoria County 1/16/2018 Attainment/Unclassifiable

Perry County 1/16/2018 Attainment/Unclassifiable

Piatt County 1/16/2018 Attainment/Unclassifiable

Pike County 1/16/2018 Attainment/Unclassifiable

Pope County 1/16/2018 Attainment/Unclassifiable

Pulaski County 1/16/2018 Attainment/Unclassifiable

Putnam County Attainment/Unclassifiable

Randolph County 1/16/2018 Attainment/Unclassifiable

Richland County 1/16/2018 Attainment/Unclassifiable

Rock Island County 1/16/2018 Attainment/Unclassifiable

Saline County 1/16/2018 Attainment/Unclassifiable

Sangamon County 1/16/2018 Attainment/Unclassifiable

Schuyler County 1/16/2018 Attainment/Unclassifiable

Scott County 1/16/2018 Attainment/Unclassifiable

Shelby County 1/16/2018 Attainment/Unclassifiable

Stark County 1/16/2018 Attainment/Unclassifiable

Stephenson County 1/16/2018 Attainment/Unclassifiable

Tazewell County 1/16/2018 Attainment/Unclassifiable

Union County 1/16/2018 Attainment/Unclassifiable

Vermilion County 1/16/2018 Attainment/Unclassifiable

Wabash County 1/16/2018 Attainment/Unclassifiable

Warren County 1/16/2018 Attainment/Unclassifiable

Washington County 1/16/2018 Attainment/Unclassifiable

Wayne County 1/16/2018 Attainment/Unclassifiable

White County 1/16/2018 Attainment/Unclassifiable

Whiteside County 1/16/2018 Attainment/Unclassifiable

Williamson County 1/16/2018 Attainment/Unclassifiable

Winnebago County 1/16/2018 Attainment/Unclassifiable

Woodford County 1/16/2018 Attainment/Unclassifiable

1 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.

2 This date is August 3, 2018, unless otherwise noted.

3 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.

Illinois—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS a

Date 1 Type

Chicago, IL:

Cook County (part) 3/28/2018 Attainment.

Area 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

Granite City, IL:

Madison County (part) 3/28/2018 Attainment.

Area is bounded by Granite City Township and Venice Township

Rest of State Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 December 31, 2011 unless otherwise noted.