SIP Status Reports
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Status of Ohio Designated Areas
Status of Ohio Designated Areas
Ohio Areas by NAAQSNOTE: As of 03/12/2021, these reports are no longer being updated. For the latest information, see the SIP Status Tools.
Jump to Ohio section for: CO (1971) Lead (1978) Lead (2008) NO2 (1971) Ozone-1Hr (1979) Ozone-8Hr (1997) Ozone-8Hr (2008) Ozone-8Hr (2015) PM-10 (1987) PM-2.5 (1997) PM-2.5 (2006) PM-2.5 (2012) SO2 (1971) SO2 (2010)
Ohio CO (1971) Areas Return to map |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Cleveland Area | Maintenance | 11/15/1990 | Moderate <= 12.7ppm | 1,280,122 | 2019 | 3.1 | Yes | 4 / 4 | |
10/16/1992 | 03/07/1994 59 FR 5332 |
Ohio Lead (1978) Areas Return to map Top of page |
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No designated areas for this pollutant. | |||||||||||
Ohio Lead (2008) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (µg/m3) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Bellefontaine | Maintenance | 12/31/2010 | 6,220 | 2017-2019 | Insufficient Data | 6 / 1 | 01/06/2014 78 FR 66280 |
10/29/2013 | 09/26/2014 79 FR 43655 |
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Cleveland | Maintenance | 12/31/2010 | 7,816 | 2017-2019 | 0.02 | Yes | 6 / 1 | 07/27/2015 80 FR 29964 |
06/29/2016 | 07/31/2017 82 FR 24871 |
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Delta | Maintenance | 12/31/2010 | 3,243 | 2017-2019 | 0.11 | Yes | 6 / 1 | 07/27/2015 80 FR 29964 |
04/27/2017 | 03/13/2018 83 FR 10796 |
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Ohio NO2 (1971) Areas Return to map Top of page |
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No designated areas for this pollutant. | |||||||||||
Ohio Ozone-1Hr (1979) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Canton Area | Maintenance (NAAQS revoked) | 11/15/1990 | Marginal | 375,586 | 2017-2019 | 0.081 | Yes | 5 / 5 | |
03/25/1994 | 04/01/1996 61 FR 3319 |
Cincinnati-Hamilton Area | Maintenance (NAAQS revoked) | 11/15/1990 | Moderate | 1,580,560 | 2017-2019 | 0.090 | Yes | 22 / 10 | |
11/15/1994 | 06/14/2005 70 FR 35946 |
Cleveland-Akron-Lorain Area | Maintenance (NAAQS revoked) | 11/15/1990 | Moderate | 2,881,937 | 2017-2019 | 0.086 | Yes | 23 / 23 | |
11/15/1994 | 05/07/1996 61 FR 20458 |
Clinton County Area | Maintenance (NAAQS revoked) | 11/15/1990 | Transitional | 42,040 | 2017-2019 | 0.079 | Yes | 1 / 1 | |
11/15/1994 | 03/21/1996 61 FR 11560 |
Columbus Area | Maintenance (NAAQS revoked) | 01/06/1992 | Marginal | 1,504,120 | 2017-2019 | 0.076 | Yes | 4 / 4 | |
01/14/1994 | 04/01/1996 61 FR 3591 |
Dayton-Springfield Area | Maintenance (NAAQS revoked) | 11/15/1990 | Moderate | 937,565 | 2017-2019 | 0.084 | Yes | 23 / 23 | |
11/01/1993 | 07/05/1995 60 FR 22289 |
Preble County Area | Maintenance (NAAQS revoked) | 11/15/1990 | Transitional | 42,270 | 2017-2019 | 0.074 | Yes | 1 / 1 | |
04/01/1994 | 03/10/1995 60 FR 7453 |
Steubenville Area | Maintenance (NAAQS revoked) | 11/15/1990 | Transitional | 69,709 | 2017-2019 | 0.077 | Yes | 1 / 1 | |
04/01/1994 | 03/10/1995 60 FR 7453 |
Toledo Area | Maintenance (NAAQS revoked) | 11/15/1990 | Moderate | 567,303 | 2017-2019 | 0.089 | Yes | 23 / 23 | |
09/01/1993 | 08/01/1995 60 FR 39115 |
Youngstown-Warren-Sharon Area | Maintenance (NAAQS revoked) | 11/15/1990 | Marginal | 449,135 | 2017-2019 | 0.078 | Yes | 5 / 5 | |
08/15/1994 | 04/01/1996 61 FR 3319 |
Ohio Ozone-8Hr (1997) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Canton-Massillon Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 375,586 | 2017-2019 | 0.067 | Yes | 4 / 0 | |
08/24/2006 | 06/15/2007 72 FR 27647 |
Cincinnati-Hamilton Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 1,622,600 | 2017-2019 | 0.074 | Yes | 4 / 1 | 05/11/2010 75 FR 26118 |
12/14/2009 | 05/11/2010 75 FR 26118 |
Cleveland-Akron-Lorain Area | Maintenance (NAAQS revoked) | 06/15/2004 | Subpart 2/Moderate | 2,881,937 | 2017-2019 | 0.073 | Yes | 53 / 47 | 09/15/2009 74 FR 47414 |
03/17/2009 | 09/15/2009 74 FR 47414 |
Columbus Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 1,754,632 | 2017-2019 | 0.068 | Yes | 4 / 0 | 09/15/2009 74 FR 47404 |
03/17/2009 | 09/15/2009 74 FR 47404 |
Dayton-Springfield Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 937,565 | 2017-2019 | 0.069 | Yes | 4 / 0 | |
11/06/2006 | 08/13/2007 72 FR 45169 |
Lima Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 106,331 | 2017-2019 | 0.069 | Yes | 4 / 0 | |
08/24/2006 | 06/15/2007 72 FR 27647 |
Parkersburg-Marietta Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 61,778 | 2017-2019 | 0.063 | Yes | 4 / 0 | |
11/17/2006 | 06/15/2007 72 FR 27651 |
Steubenville-Weirton Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 69,709 | 2017-2019 | 0.062 | Yes | 4 / 0 | |
10/03/2006 | 06/15/2007 72 FR 27639 |
Toledo Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 567,303 | 2017-2019 | 0.070 | Yes | 4 / 0 | |
12/22/2006 | 08/09/2007 72 FR 44784 |
Wheeling Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 70,400 | 2017-2019 | 0.063 | Yes | 4 / 0 | |
08/24/2006 | 06/15/2007 72 FR 27643 |
Youngstown-Warren-Sharon Area | Maintenance (NAAQS revoked) | 06/15/2004 | Former Subpart 1 | 556,976 | 2017-2019 | 0.067 | Yes | 4 / 0 | |
12/04/2006 | 06/12/2007 72 FR 32190 |
Ohio Ozone-8Hr (2008) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Cincinnati | Maintenance | 07/20/2012 | Marginal | 1,622,600 | 2017-2019 | 0.074 | Yes | 3 / 3 | 06/03/2016 81 FR 26697 |
04/21/2016 | 12/16/2016 81 FR 91035 |
Cleveland-Akron-Lorain | Maintenance | 07/20/2012 | Marginal | 2,881,937 | 2017-2019 | 0.073 | Yes | 3 / 3 | 08/26/2016 81 FR 41444 |
07/06/2016 | 01/06/2017 82 FR 1603 |
Columbus | Maintenance | 07/20/2012 | Marginal | 1,754,632 | 2017-2019 | 0.068 | Yes | 3 / 3 | 06/03/2016 81 FR 26697 |
06/16/2016 | 12/21/2016 81 FR 93631 |
Ohio Ozone-8Hr (2015) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (ppm) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Cincinnati | Nonattainment | 08/03/2018 | Marginal | 1,580,560 | 2017-2019 | 0.074 | No | 3 / 2 | |
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Cleveland | Nonattainment | 08/03/2018 | Marginal | 2,780,440 | 2017-2019 | 0.073 | No | 3 / 2 | |
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Columbus | Maintenance | 08/03/2018 | Marginal | 1,650,276 | 2017-2019 | 0.068 | Yes | 3 / 0 | 08/21/2019 84 FR 43508 |
04/23/2019 | 08/21/2019 84 FR 43508 |
Ohio PM-10 (1987) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Average Estimated Exceedances (est. exc.) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Cuyahoga County | Maintenance | 11/15/1990 | Moderate | 1,280,122 | 2017-2019 | 0.0 | Yes | 3 / 3 | |
05/22/2000 | 01/10/2001 65 FR 77308 |
Jefferson County; (part) | Maintenance | 11/15/1990 | Moderate | 3,472 | 2017-2019 | No Data | 3 / 3 | |
05/22/2000 | 01/10/2001 65 FR 77308 |
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Ohio PM-2.5 (1997) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (µg/m3) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Canton-Massillon | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 375,586 | 2017-2019 | 9.3 | Yes | 5 / 1 | 10/22/2013 78 FR 62459 |
06/18/2012 | 10/22/2013 78 FR 62459 |
Cincinnati-Hamilton | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 1,580,560 | 2017-2019 | 11.8 | Yes | 8 / 3 | 10/31/2011 76 FR 60373 |
07/22/2016 | 04/07/2017 82 FR 16938 |
Cleveland-Akron-Lorain | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 2,709,565 | 2017-2019 | 11.0 | Yes | 5 / 1 | 10/14/2011 76 FR 56641 |
10/05/2011 | 09/18/2013 78 FR 57270 |
Columbus | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 1,651,811 | 2017-2019 | 9.2 | Yes | 5 / 1 | 10/14/2011 76 FR 56641 |
06/03/2011 | 11/07/2013 78 FR 66845 |
Dayton-Springfield | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 835,059 | 2017-2019 | 9.2 | Yes | 5 / 1 | 10/14/2011 76 FR 56641 |
06/01/2011 | 09/26/2013 78 FR 59258 |
Huntington-Ashland | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 149,579 | 2017-2019 | 7.5 | Yes | 5 / 1 | 10/07/2011 76 FR 55542 |
05/04/2011 | 12/31/2012 77 FR 76883 |
Parkersburg-Marietta | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 61,778 | 2017-2019 | 7.9 | Yes | 5 / 1 | 01/03/2012 76 FR 75464 |
02/29/2012 | 08/29/2013 78 FR 53275 |
Steubenville-Weirton | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 69,709 | 2017-2019 | 9.2 | Yes | 5 / 1 | 10/14/2011 76 FR 56641 |
04/16/2012 | 09/18/2013 78 FR 57273 |
Wheeling | Maintenance (NAAQS revoked) | 04/05/2005 | Former Subpart 1 | 70,400 | 2017-2019 | 9.2 | Yes | 5 / 1 | 01/03/2012 76 FR 75464 |
04/16/2012 | 08/29/2013 78 FR 53275 |
Ohio PM-2.5 (2006) Areas Return to map Area designated nonattainment for the 24-hour standard Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value 24-Hr (µg/m3) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Canton-Massillon | Maintenance | 12/14/2009 | Former Subpart 1 | 375,586 | 2017-2019 | 21 | Yes | 6 / 0 | |
06/18/2012 | 10/22/2013 78 FR 62459 |
Cleveland-Akron-Lorain | Maintenance | 12/14/2009 | Former Subpart 1 | 2,687,051 | 2017-2019 | 24 | Yes | 6 / 0 | |
05/30/2012 | 09/18/2013 78 FR 57270 |
Steubenville-Weirton | Maintenance | 12/14/2009 | Former Subpart 1 | 69,709 | 2017-2019 | 21 | Yes | 6 / 0 | 06/13/2012 77 FR 28264 |
05/25/2012 | 09/18/2013 78 FR 57273 |
Ohio PM-2.5 (2012) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual (µg/m3) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Cleveland | Maintenance | 04/15/2015 | Moderate | 1,581,478 | 2017-2019 | 11.0 | Yes | 7 / 6 | |
07/24/2018 | 04/12/2019 84 FR 14881 |
Ohio SO2 (1971) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
Design Value Annual/24-Hr (ppb) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Coshocton County; Franklin Township | Maintenance | 10/05/1978 | 1,229 | / | 1 / 1 | |
10/26/1995 | 07/05/2000 65 FR 35577 |
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Cuyahoga County (part) | Maintenance | 10/05/1978 | 996,159 | / | 1 / 1 | |
09/27/2003 | 02/28/2005 70 FR 4023 |
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Gallia County; Addison Township | Maintenance | 10/05/1978 | 2,197 | / | 1 / 1 | |
10/26/1995 | 07/05/2000 65 FR 35577 |
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Jefferson County; (part) Steubenville & Mingo Junction | Maintenance | 10/05/1978 | 69,712 | / | 1 / 1 | |
08/24/1998 | 09/29/1999 64 FR 47113 |
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Lake County; (part) Eastlake, Timberlake, Lakeline, Willoughby, Mentor | Maintenance | 10/05/1978 | 229,760 | / | 1 / 1 | |
08/20/1998 | 09/29/1999 64 FR 47113 |
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Lorain County (part) | Maintenance | 10/05/1978 | 301,074 | / | 1 / 1 | |
10/26/1995 | 07/05/2000 65 FR 35577 |
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Lucas County (part) | Maintenance | 10/05/1978 | 441,812 | / | 1 / 1 | |
03/30/1999 | 03/18/2004 69 FR 4856 |
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Morgan County: Center Township | Maintenance | 10/05/1978 | 15,053 | / | 0 / 0 | |
08/06/1992 | 10/21/1994 59 FR 48403 |
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Washington County: Waterford Township | Maintenance | 10/05/1978 | 61,777 | / | 0 / 0 | |
08/06/1992 | 10/21/1994 59 FR 48403 |
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Ohio SO2 (2010) Areas Return to map Top of page |
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Click on the Area name to view SIP Required Elements Area |
Status | Designation Date |
Classification | 2010 Population (state portion) |
Meets NAAQS Basis |
3 Year 1-Hour Design Value (ppb) (entire area) |
Meets NAAQS |
SIP Requirements Original/ Approved |
Clean Air Determination Citation Effective Date Click to view FR notice |
Redesignation Request Date |
Redesignation Citation Effective Date Click to view FR notice |
Campbell-Clermont Counties | Maintenance | 10/04/2013 | 14,349 | 2017-2019 | 11 | Yes | 6 / 5 | |
08/11/2015 | 11/21/2016 81 FR 83158 |
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Lake County | Maintenance | 10/04/2013 | 230,041 | 2017-2019 | 33 | Yes | 6 / 5 | |
04/09/2018 | 05/14/2019 84 FR 21253 |
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Muskingum River | Nonattainment | 10/04/2013 | 4,456 | 2017-2019 | Insufficient Data | 6 / 0 | |
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Steubenville | Maintenance | 10/04/2013 | 38,854 | 2017-2019 | 46 | Yes | 6 / 6 | |
06/25/2019 | 11/29/2019 84 FR 65683 |
We have made our best effort to ensure that the data contained in these reports is accurate. We note that there may be brief delays in
updating the reports as we receive new state submissions and we take rulemaking action on plans. In order to assist us in providing
accurate information, we request that you contact us by clicking on the "Contact Us" link near the top of this page with any comments
regarding or corrections to the posted information, including concerns about whether the entries reflect the most recent status. Current and historical design value data can be found on the EPA Air Quality Design Values website and the EPA Green Book contains comprehensive nonattainment area, designation status, and historical information. The level of the 1-hour NAAQS for sulfur dioxide is 75 parts per billion (ppb) calculated as the 3-year average of the 99th percentile of the annual distribution of daily maximum 1-hour average concentrations. |