{"data":{"id":"us/40-cfr-81.312","jurisdiction":"us","citation":"40 CFR 81.312","heading":"Hawaii.","body":"Hawaii—TSP\nDesignated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards\nHawaii Island X 1\nRest of the State X\nHawaii—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\nWhole State X\n1 EPA designation replaces State designation.\nHawaii—2010 Sulfur Dioxide NAAQS\n[Primary]\nDesignated area 1 Designation\nDate 2 Type\nHawaii County 9/12/2016 Attainment/Unclassifiable.\nHonolulu County 4/30/2021 Attainment/Unclassifiable.\nKalawao County Attainment/Unclassifiable.\nKauai County Attainment/Unclassifiable.\nMaui 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.\nHawaii—Carbon Monoxide\nDesignated Area Designation Classification\nDate 1 Type Date 1 Type\nStatewide Unclassifiable/Attainment\nHawaii County\nHonolulu County\nKalawao\nKauai County\nMaui County\n1 This date is November 15, 1990, unless otherwise noted.\nHawaii—Ozone (1-Hour Standard)2\nDesignated area Designation Classification\nDate1 Type Date1 Type\nStatewide Unclassifiable/Attainment\nHawaii County\nHonolulu County\nKalawao\nKauai County\nMaui County\n1 This date is October 18, 2000, unless otherwise noted.\n2 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Hawaii.\nHawaii—1997 Annual PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nHawaii County Unclassifiable/Attainment\nHonolulu County Unclassifiable/Attainment\nKalawao County Unclassifiable/Attainment\nKauai County Unclassifiable/Attainment\nMaui 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.\nHawaii—2012 Annual PM2.5 NAAQS\n[Primary]\nDesignated area 1 Designation Classification\nDate 2 Type Date 2 Type\nStatewide:\nHawaii County Unclassifiable/Attainment\nHonolulu County Unclassifiable/Attainment\nKalawao County Unclassifiable/Attainment\nKauai County Unclassifiable/Attainment\nMaui County Unclassifiable/Attainment\n1 Includes areas of Indian country located in each county or area, except as otherwise specified.\n2 This date is April 15, 2015 unless otherwise noted.\nHawaii—1997 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nHawaii County Unclassifiable/Attainment\nHonolulu County Unclassifiable/Attainment\nKalawao County Unclassifiable/Attainment\nKauai County Unclassifiable/Attainment\nMaui 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.\nHawaii—2006 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nHawaii County Unclassifiable/Attainment\nHonolulu County Unclassifiable/Attainment\nKalawao County Unclassifiable/Attainment\nKauai County Unclassifiable/Attainment\nMaui 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.\nHawaii—NO2 (1971 Annual Standard)\nDesignated area Does not meet primary standards Cannot be classified or better than national standards\nWhole State X\nHawaii—NO2 (2010 1-Hour Standard)\nDesignated area Designation a\nDate 1 Type\nHawaii County Unclassifiable/Attainment.\nHonolulu County Unclassifiable/Attainment.\nKalawao County Unclassifiable/Attainment.\nKauai County Unclassifiable/Attainment.\nMaui 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.\nHawaii—1997 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation a Category/classification\nDate 1 Type Date 1 Type\nStatewide Unclassifiable Attainment\nHawaii County\nHonolulu County\nKalawao County\nKauai County\nMaui County\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is June 15, 2004, unless otherwise noted.\nHawaii—2008 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area 2 Designation Classification\nDate 1 Type Date 1 Type\nHawaii County Unclassifiable/Attainment\nHonolulu County Unclassifiable/Attainment\nKalawao County Unclassifiable/Attainment\nKauai County Unclassifiable/Attainment\nMaui County Unclassifiable/Attainment\n1 This date is July 20, 2012, unless otherwise noted.\n2 Includes any Indian country in each county or area, unless otherwise specified.\nHawaii—2015 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area 1 Designation Classification\nDate 2 Type Date Type\nHawaii County Attainment/Unclassifiable\nHonolulu County Attainment/Unclassifiable\nKalawao County Attainment/Unclassifiable\nKauai County Attainment/Unclassifiable\nMaui 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 January 16, 2018, unless otherwise noted.\nHawaii—2008 Lead NAAQS\nDesignated area Designation for the 2008 NAAQS a\nDate 1 Type\nWhole 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":"b9d7010e0205d87cb65ce5743b1438ab809302bdce18f21606bc6d2e8745f4eb","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.311","next":"us/40-cfr-81.313"},"notice":"GroundRules: Original legal text. Not legal advice."}