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Status of Designated Areas for the Ozone-1Hr (1979) NAAQS

by Area Name, State
As of 09/26/2020




Ozone-1Hr (1979) Areas    Return to NAAQS selection
 
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Area
State 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
Albany-Schenectady-Troy Area NY Nonattainment (NAAQS revoked) 01/06/1992 Marginal 937,407 2017-2019 0.073 Yes 7 / 7 11/07/1994
59 FR 50848
   
Allentown-Bethlehem-Easton Area NJ Nonattainment (NAAQS revoked) 11/15/1990 Marginal 108,692 2017-2019 0.081 Yes 9 / 9 11/07/1994
59 FR 50848
   
Allentown-Bethlehem-Easton Area PA Nonattainment (NAAQS revoked) 11/15/1990 Marginal 712,481 2017-2019 0.081 Yes 8 / 8 03/20/1995
60 FR 3349
   
Altoona Area PA Nonattainment (NAAQS revoked) 01/06/1992 Marginal 127,089 2017-2019 0.072 Yes 9 / 9 03/20/1995
60 FR 3349
   
Atlanta Area GA Maintenance (NAAQS revoked) 11/15/1990 Severe-15 4,552,902 2017-2019 0.092 Yes 26 / 21  
 
02/01/2005 06/14/2005
70 FR 34660
Atlantic City Area NJ Nonattainment (NAAQS revoked) 11/15/1990 Moderate 371,814 2017-2019 0.076 Yes 23 / 23 01/06/2010
74 FR 63993
   
Baltimore Area MD Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 2,662,691 2017-2019 0.100 Yes 29 / 28 07/12/2012
77 FR 34810
   
Baton Rouge Area LA Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 732,587 2017-2019 0.093 Yes 27 / 27 03/12/2010
75 FR 6570
   
Beaumont-Port Arthur Area TX Nonattainment (NAAQS revoked) 11/15/1990 Serious 388,745 2017-2019 0.093 Yes 24 / 24 11/19/2010
75 FR 64675
02/05/2019  
Birmingham Area AL Maintenance (NAAQS revoked) 11/15/1990 Marginal 853,551 2017-2019 0.093 Yes 4 / 4  
 
01/30/2004 04/12/2004
69 FR 11798
Boston-Lawrence-Worcester (E. Mass) Area MA Nonattainment (NAAQS revoked) 11/15/1990 Serious 5,723,468 2017-2019 0.095 Yes 26 / 26 06/28/2012
77 FR 31496
   
Boston-Lawrence-Worcester Area NH Nonattainment (NAAQS revoked) 11/15/1990 Serious 366,900 2017-2019 0.095 Yes 26 / 26 06/28/2012
77 FR 31496
   
Buffalo-Niagara Falls Area NY Nonattainment (NAAQS revoked) 01/06/1992 Marginal 1,135,509 2017-2019 0.080 Yes 7 / 7 11/07/1994
59 FR 50848
   
Canton Area OH 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
Charleston Area WV Maintenance (NAAQS revoked) 01/06/1992 Moderate 248,549 2017-2019 0.076 Yes 24 / 24  
 
11/13/1992 09/06/1994
59 FR 45985
Charlotte-Gastonia Area NC Maintenance (NAAQS revoked) 11/15/1990 Moderate 1,125,714 2017-2019 0.090 Yes 23 / 23  
 
11/12/1993 07/05/1995
60 FR 34859
Cherokee County Area SC Maintenance (NAAQS revoked) 01/06/1992 Marginal 55,342 2017-2019   Insufficient Data 0 / 0  
 
07/20/1992 02/16/1993
57 FR 59300
Chicago-Gary-Lake County Area IL Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 8,361,740 2017-2019 0.100 Yes 30 / 29 01/29/2009
73 FR 79652
01/30/2007  
Chicago-Gary-Lake County Area IN Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 660,348 2017-2019 0.100 Yes 29 / 28 01/29/2009
73 FR 79652
10/25/2007  
Chico Area CA Nonattainment (NAAQS revoked) 11/15/1990 Transitional 220,000 2017-2019 0.091 Yes 2 / 0  
 
08/18/1997  
Cincinnati-Hamilton Area KY Maintenance (NAAQS revoked) 11/15/1990 Moderate 368,867 2017-2019 0.090 Yes 21 / 20  
 
12/12/1999 08/30/2002
67 FR 49600
Cincinnati-Hamilton Area OH 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 OH 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 OH 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 OH 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
Dallas-Fort Worth Area TX Nonattainment (NAAQS revoked) 11/15/1990 Serious 5,622,128 2017-2019 0.098 Yes 24 / 24 11/17/2008
73 FR 61357
See Note 12/08/2016
81 FR 78688
Dayton-Springfield Area OH 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
Denver-Boulder Area CO Maintenance (NAAQS revoked) 11/15/1990 Transitional 2,770,524 2017-2019 0.101 Yes 2 / 2  
 
08/12/1996 10/11/2001
66 FR 47086
Detroit-Ann Arbor Area MI Maintenance (NAAQS revoked) 11/15/1990 Moderate 4,704,743 2017-2019 0.091 Yes 23 / 23  
 
11/01/1993 04/06/1995
60 FR 12459
Dona Ana County (part); Sunland Park NM Nonattainment (NAAQS revoked) 07/12/1995 Marginal 12,345 2017-2019 0.097 Yes 3 / 3  
 
   
Door County Area WI Maintenance (NAAQS revoked) 01/06/1992 Rural Transport (Marginal) 27,785 2017-2019 0.081 Yes 4 / 4  
 
12/31/2002 06/16/2003
68 FR 18883
East Kern County Area CA Maintenance (NAAQS revoked) 12/10/2001 Serious 141,398 2017-2019 0.102 Yes 27 / 26  
 
  06/21/2004
69 FR 21731
Edmonson County Area KY Maintenance (NAAQS revoked) 01/06/1992 Rural Transport (Marginal) 12,161 2017-2019 0.069 Yes 3 / 3  
 
01/20/1993 01/03/1995
59 FR 55053
El Paso Area TX Nonattainment (NAAQS revoked) 11/15/1990 Serious 800,647 2017-2019 0.102 Yes 25 / 25  
 
05/10/2019  
Erie Area PA Nonattainment (NAAQS revoked) 11/15/1990 Marginal 280,566 2017-2019 0.072 Yes 8 / 8 03/20/1995
60 FR 3349
   
Essex County Area; Whiteface Mountain NY Nonattainment (NAAQS revoked) 01/06/1992 Rural Transport (Marginal) 0 2017-2019 0.087 Yes 7 / 7 11/07/1994
59 FR 50848
   
Evansville Area IN Maintenance (NAAQS revoked) 01/06/1992 Marginal 179,703 2017-2019 0.078 Yes 4 / 4  
 
11/01/1993 12/09/1997
62 FR 64725
Flint Area MI Maintenance (NAAQS revoked) 11/15/1990 Transitional 425,790 2017-2019 0.078 Yes 1 / 1  
 
05/09/2000 01/16/2001
65 FR 67629
Grand Rapids Area MI Maintenance (NAAQS revoked) 11/15/1990 Moderate 866,423 2017-2019 0.079 Yes 23 / 23  
 
03/09/1995 06/21/1996
61 FR 31831
Greater Connecticut Area CT Nonattainment (NAAQS revoked) 11/15/1990 Serious 2,666,958 2017-2019 0.106 Yes 26 / 26 04/16/2012
77 FR 15607
   
Greenbrier Area WV Maintenance (NAAQS revoked) 01/06/1992 Marginal 35,480 2017-2019 0.069 Yes 4 / 4 03/20/1995
60 FR 3349
09/09/1994 09/18/1995
60 FR 39857
Greensboro-Winston-Salem-High Point Area NC Maintenance (NAAQS revoked) 01/06/1992 Moderate 1,001,955 2017-2019 0.079 Yes 16 / 16  
 
11/13/1992 11/08/1993
58 FR 47391
Hancock County and Waldo County Area ME Maintenance (NAAQS revoked) 11/15/1990 Marginal 93,204 2017-2019 0.088 Yes 4 / 4  
 
05/13/1996 04/27/1997
62 FR 9081
Harrisburg-Lebanon-Carlisle Area PA Nonattainment (NAAQS revoked) 11/15/1990 Marginal 683,043 2017-2019 0.076 Yes 8 / 8 03/20/1995
60 FR 3349
   
Houston-Galveston-Brazoria Area TX Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 5,891,999 2017-2019 0.114 Yes 30 / 30 11/19/2015
80 FR 63429
See Note 11/19/2015
80 FR 63429
Huntington-Ashland Area WV Maintenance (NAAQS revoked) 11/15/1990 Moderate 138,800 2017-2019 0.074 Yes 23 / 23  
 
11/12/1992 12/21/1994
59 FR 65719
Huntington-Ashland Area KY Maintenance (NAAQS revoked) 11/15/1990 Moderate 66,676 2017-2019 0.074 Yes 22 / 22  
 
11/17/1993 06/29/1995
60 FR 33748
Imperial County Area CA Nonattainment (NAAQS revoked) 11/15/1990 Transitional 174,528 2017-2019 0.105 Yes 2 / 0  
 
   
Indianapolis Area IN Maintenance (NAAQS revoked) 11/15/1990 Marginal 903,393 2017-2019 0.083 Yes 4 / 4  
 
11/22/1993 11/30/1994
59 FR 54391
Jacksonville Area FL Maintenance (NAAQS revoked) 11/15/1990 Transitional 864,263 2017-2019 0.080 Yes 1 / 1  
 
06/01/1993 03/06/1995
60 FR 41
Jefferson County Area NY Nonattainment (NAAQS revoked) 01/06/1992 Marginal 116,229 2017-2019 0.087 Yes 7 / 7 11/07/1994
59 FR 50848
   
Jersey County Area IL Maintenance (NAAQS revoked) 01/06/1992 Marginal 22,985 2017-2019 0.087 Yes 4 / 4  
 
11/12/1993 04/13/1995
60 FR 13634
Johnstown Area PA Nonattainment (NAAQS revoked) 01/06/1992 Marginal 221,421 2017-2019 0.072 Yes 9 / 9 03/20/1995
60 FR 3349
   
Kansas City Area KS Maintenance (NAAQS revoked) 11/15/1990 Sub-marginal 701,684 2017-2019 0.087 Yes 0 / 0  
 
10/09/1991 07/23/1992
57 FR 27936
Kansas City Area MO Maintenance (NAAQS revoked) 11/15/1990 Sub-marginal 985,419 2017-2019 0.087 Yes 0 / 0  
 
10/09/1991 07/23/1992
57 FR 27939
Kent County and Queen Anne's County Area MD Maintenance (NAAQS revoked) 01/06/1992 Marginal 67,995 2017-2019 0.084 Yes 7 / 7 03/20/1995
60 FR 3349
02/09/2004 11/22/2004
69 FR 61766
Kewaunee County Area WI Maintenance (NAAQS revoked) 01/06/1992 Moderate 20,574 2017-2019 0.084 Yes 21 / 21  
 
05/15/1996 08/26/1996
61 FR 43668
Knox County and Lincoln County Area ME Nonattainment (NAAQS revoked) 11/15/1990 Moderate 74,193 2017-2019 0.080 Yes 21 / 21  
 
   
Knoxville Area TN Maintenance (NAAQS revoked) 01/06/1992 Marginal 432,226 2017-2019 0.082 Yes 2 / 2  
 
08/26/1992 10/27/1993
58 FR 50271
Lafayette Area LA Maintenance (NAAQS revoked) 11/15/1990 Transitional 221,578 2017-2019 0.075 Yes 1 / 1  
 
05/25/1993 10/17/1995
60 FR 43020
Lake Charles Area LA Maintenance (NAAQS revoked) 11/15/1990 Marginal 192,768 2017-2019 0.083 Yes 4 / 4  
 
12/20/1995 06/02/1997
62 FR 24036
Lancaster Area PA Nonattainment (NAAQS revoked) 11/15/1990 Marginal 519,445 2017-2019 0.082 Yes 8 / 8 03/20/1995
60 FR 3349
   
Lansing-East Lansing Area MI Maintenance (NAAQS revoked) 11/15/1990 Transitional 464,036 2017-2019 0.077 Yes 1 / 1  
 
  03/15/1996
61 FR 5707
Lewiston-Auburn Area ME Nonattainment (NAAQS revoked) 11/15/1990 Moderate 229,853 2017-2019 0.074 Yes 22 / 22  
 
   
Lexington-Fayette Area KY Maintenance (NAAQS revoked) 01/06/1992 Marginal 342,976 2017-2019 0.071 Yes 3 / 3  
 
01/20/1993 11/13/1995
60 FR 47089
Los Angeles-South Coast Air Basin Area CA Nonattainment (NAAQS revoked) 11/15/1990 Extreme 15,798,191 2017-2019 0.144 No 42 / 38  
 
   
Louisville Area IN Maintenance (NAAQS revoked) 11/15/1990 Moderate 184,810 2017-2019 0.089 Yes 22 / 22  
 
04/11/2001 11/23/2001
66 FR 53665
Louisville Area KY Maintenance (NAAQS revoked) 11/15/1990 Moderate 769,082 2017-2019 0.089 Yes 23 / 23  
 
  11/23/2001
66 FR 53665
Manchester Area NH Nonattainment (NAAQS revoked) 11/15/1990 Marginal 392,234 2017-2019 0.076 Yes 4 / 4 11/29/2012
77 FR 65625
   
Manitowoc County Area WI Maintenance (NAAQS revoked) 01/06/1992 Moderate 81,442 2017-2019 0.087 Yes 21 / 21  
 
12/31/2002 06/16/2003
68 FR 18883
Memphis Area TN Maintenance (NAAQS revoked) 11/15/1990 Marginal 927,644 2017-2019 0.088 Yes 4 / 4  
 
11/19/1992 02/16/1995
60 FR 3352
Miami-Fort Lauderdale-W. Palm Beach Area FL Maintenance (NAAQS revoked) 11/15/1990 Moderate 5,564,635 2017-2019 0.087 Yes 21 / 20  
 
11/01/1993 04/25/1995
60 FR 10325
Milwaukee-Racine Area WI Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 1,917,742 2017-2019 0.099 Yes 30 / 29 06/23/2009
74 FR 18641
   
Monterey Bay Area CA Maintenance (NAAQS revoked) 11/15/1990 Moderate 732,708 2017-2019 0.084 Yes 20 / 11 02/16/2010
74 FR 66916
07/14/1994 03/18/1997
62 FR 2597
Morongo Band of Mission Indians CA Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 913 2017-2019 0.127 No 0 / 0  
 
   
Muskegon Area MI Maintenance (NAAQS revoked) 11/15/1990 Moderate 172,188 2017-2019 0.091 Yes 23 / 23  
 
03/09/1995 10/18/2000
65 FR 52651
Nashville Area TN Maintenance (NAAQS revoked) 11/15/1990 Moderate 1,347,105 2017-2019 0.086 Yes 23 / 23  
 
11/17/1994 10/30/1996
61 FR 55903
New Orleans Area LA Maintenance (NAAQS revoked) 11/15/1990 Transitional 865,058 2017-2019 0.084 Yes 1 / 1  
 
04/30/1993 12/01/1995
60 FR 51354
New York-N. New Jersey-Long Island Area CT Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 907,442 2017-2019 0.114 Yes 30 / 27 07/18/2012
77 FR 36163
   
New York-N. New Jersey-Long Island Area NY Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 12,398,270 2017-2019 0.114 Yes 30 / 29 07/18/2012
77 FR 36163
   
New York-N. New Jersey-Long Island Area NJ Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 6,471,215 2017-2019 0.114 Yes 30 / 29 07/18/2012
77 FR 36163
   
Norfolk-Virginia Beach-Newport News (Hampton Roads) Area VA Maintenance (NAAQS revoked) 01/06/1992 Marginal 1,559,972 2017-2019 0.076 Yes 4 / 4  
 
08/27/1996 07/28/1997
62 FR 34408
OTR VT               13 / 12  
 
   
OTR VA               13 / 13  
 
   
OTR PA               13 / 13  
 
   
OTR RI               13 / 13  
 
   
OTR NH               13 / 13  
 
   
OTR NJ               13 / 13  
 
   
OTR NY               13 / 12  
 
   
OTR CT               13 / 13  
 
   
OTR DC               13 / 13  
 
   
OTR DE               13 / 13  
 
   
OTR MA               13 / 13  
 
   
OTR ME               13 / 13  
 
   
OTR MD               13 / 13  
 
   
OTR 1990 MD               5 / 5  
 
   
OTR 1990 ME               6 / 6  
 
   
OTR 1990 MA               5 / 5  
 
   
OTR 1990 DE               5 / 5  
 
   
OTR 1990 DC               5 / 5  
 
   
OTR 1990 CT               5 / 5  
 
   
OTR 1990 NY               5 / 2  
 
   
OTR 1990 NJ               5 / 5  
 
   
OTR 1990 NH               5 / 5  
 
   
OTR 1990 RI               5 / 5  
 
   
OTR 1990 PA               5 / 5  
 
   
OTR 1990 VT               5 / 4  
 
   
OTR 1990 VA               5 / 5  
 
   
Owensboro Area KY Maintenance (NAAQS revoked) 01/06/1992 Marginal 97,517 2017-2019 0.076 Yes 3 / 3  
 
01/20/1993 01/03/1995
59 FR 55053
Paducah Area KY Maintenance (NAAQS revoked) 01/06/1992 Marginal 32,690 2017-2019 0.076 Yes 3 / 3  
 
01/20/1993 04/10/1995
60 FR 7124
Parkersburg-Marietta Area WV Maintenance (NAAQS revoked) 01/06/1992 Moderate 86,956 2017-2019 0.073 Yes 23 / 23  
 
11/13/1992 09/06/1994
59 FR 45978
Philadelphia-Wilmington-Trenton Area NJ Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 1,840,173 2017-2019 0.102 Yes 30 / 30 05/08/2009
74 FR 15864
   
Philadelphia-Wilmington-Trenton Area PA Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 4,008,994 2017-2019 0.102 Yes 29 / 28 08/25/2008
73 FR 43360
   
Philadelphia-Wilmington-Trenton Area MD Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 101,108 2017-2019 0.102 Yes 29 / 28 08/25/2008
73 FR 43360
   
Philadelphia-Wilmington-Trenton Area DE Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 700,789 2017-2019 0.102 Yes 30 / 29 08/25/2008
73 FR 43360
   
Phoenix Area AZ Maintenance (NAAQS revoked) 11/15/1990 Serious 3,763,324 2017-2019 0.100 Yes 22 / 22  
 
04/21/2004 06/14/2005
70 FR 34362
Pittsburgh-Beaver Valley Area PA Maintenance (NAAQS revoked) 11/15/1990 Moderate 2,356,285 2017-2019 0.083 Yes 24 / 24  
 
04/09/2001 11/19/2001
66 FR 53094
Pointe Coupee Parish Area LA Maintenance (NAAQS revoked) 11/15/1990 Marginal 22,802 2017-2019 0.085 Yes 0 / 0  
 
12/20/1995 12/20/1996
62 FR 648
Portland Area ME Nonattainment (NAAQS revoked) 11/15/1990 Moderate 514,098 2017-2019 0.089 Yes 21 / 21  
 
   
Portland-Vancouver AQMA Area WA Maintenance (NAAQS revoked) 11/15/1990 Marginal 410,990 2017-2019 0.091 Yes 4 / 4  
 
06/25/1996 06/18/1997
62 FR 27204
Portland-Vancouver AQMA Area OR Maintenance (NAAQS revoked) 11/15/1990 Marginal 1,261,370 2017-2019 0.091 Yes 4 / 4  
 
09/09/1996 06/18/1997
62 FR 27204
Portsmouth-Dover-Rochester Area NH Nonattainment (NAAQS revoked) 11/15/1990 Serious 206,398 2017-2019 0.089 Yes 26 / 26 11/29/2012
77 FR 65625
   
Poughkeepsie Area NY Nonattainment (NAAQS revoked) 01/06/1992 Moderate 640,556 2017-2019 0.089 Yes 8 / 8 01/06/2010
74 FR 63993
   
Preble County Area OH 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
Providence (all of RI) Area RI Nonattainment (NAAQS revoked) 11/15/1990 Serious 1,052,567 2017-2019 0.094 Yes 26 / 26  
 
   
Raleigh-Durham Area NC Maintenance (NAAQS revoked) 01/06/1992 Moderate 1,186,305 2017-2019 0.078 Yes 22 / 22  
 
11/13/1992 06/17/1994
59 FR 18300
Reading Area PA Maintenance (NAAQS revoked) 11/15/1990 Moderate 411,442 2017-2019 0.086 Yes 24 / 24  
 
01/28/1997 06/06/1997
62 FR 24826
Reno Area NV Nonattainment (NAAQS revoked) 01/06/1992 Marginal 421,407 2017-2019 0.089 Yes 3 / 2 06/02/2005
70 FR 22803
04/02/1997  
Richmond Area VA Maintenance (NAAQS revoked) 11/15/1990 Moderate 967,312 2017-2019 0.083 Yes 23 / 23  
 
07/26/1996 12/17/1997
62 FR 61237
Sacramento Metro Area CA Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 2,336,542 2017-2019 0.113 Yes 71 / 47 11/19/2012
77 FR 64036
   
Salt Lake City Area; (Davis County / Salt Lake County) UT Maintenance (NAAQS revoked) 11/15/1990 Moderate 1,336,134 2017-2019 0.103 Yes 22 / 22  
 
11/12/1993 08/18/1997
62 FR 38213
San Diego Area CA Maintenance (NAAQS revoked) 11/15/1990 Serious 3,095,313 2017-2019 0.105 Yes 33 / 33  
 
12/20/2002 07/28/2003
68 FR 37976
San Francisco-Bay Area CA Nonattainment (NAAQS revoked) 07/10/1998 Other 6,896,958 2017-2019 0.103 Yes 26 / 24 05/24/2004
69 FR 21717
11/12/1993  
San Joaquin Valley Area CA Nonattainment (NAAQS revoked) 11/15/1990 Extreme 3,830,257 2017-2019 0.116 Yes 36 / 30 08/17/2016
81 FR 46608
   
Santa Barbara-Santa Maria-Lompoc Area CA Maintenance (NAAQS revoked) 11/15/1990 Serious 423,895 2017-2019 0.082 Yes 22 / 22  
 
02/21/2003 08/08/2003
68 FR 40789
Scranton-Wilkes-Barre Area PA Nonattainment (NAAQS revoked) 11/15/1990 Marginal 800,768 2017-2019 0.074 Yes 8 / 8 03/20/1995
60 FR 3349
   
Seattle-Tacoma Area WA Maintenance (NAAQS revoked) 01/06/1992 Marginal 3,439,810 2017-2019 0.113 Yes 4 / 4  
 
03/04/1996 11/25/1996
61 FR 50438
Sheboygan Area WI Maintenance (NAAQS revoked) 11/15/1990 Moderate 115,507 2017-2019 0.095 Yes 22 / 22  
 
05/15/1996 08/26/1996
61 FR 43668
Smyth County Area; White Top Mountain VA Nonattainment (NAAQS revoked) 01/06/1992 Rural Transport (Marginal) 0       4 / 4  
 
10/02/1996  
South Bend-Elkhart Area IN Maintenance (NAAQS revoked) 11/15/1990 Marginal 464,490 2017-2019 0.082 Yes 4 / 4  
 
09/22/1993 11/30/1994
59 FR 54391
Southeast Desert Modified AQMA Area CA Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 1,194,366 2017-2019 0.126 No 42 / 27 05/15/2015
80 FR 20166
   
Springfield (W. Mass) Area MA Nonattainment (NAAQS revoked) 11/15/1990 Serious 824,161 2017-2019 0.092 Yes 26 / 26 05/30/2012
77 FR 25362
   
St. Louis Area MO Maintenance (NAAQS revoked) 11/15/1990 Serious 1,998,958 2017-2019 0.098 Yes 27 / 23  
 
12/06/2002 05/12/2003
68 FR 25418
St. Louis Area IL Maintenance (NAAQS revoked) 11/15/1990 Serious 572,295 2017-2019 0.098 Yes 27 / 21  
 
12/30/2002 05/12/2003
68 FR 25442
Steubenville Area OH 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
Sussex County Area DE Nonattainment (NAAQS revoked) 01/06/1992 Marginal 197,145 2017-2019 0.075 Yes 8 / 8 03/20/1995
60 FR 3349
   
Tampa-St. Petersburg-Clearwater Area FL Maintenance (NAAQS revoked) 11/15/1990 Marginal 2,145,768 2017-2019 0.087 Yes 4 / 4  
 
02/07/1995 02/05/1996
60 FR 62748
Toledo Area OH 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
Ventura County Area CA Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 823,318 2017-2019 0.099 Yes 29 / 23 07/27/2009
74 FR 25153
   
Walworth Area WI Maintenance (NAAQS revoked) 01/06/1992 Marginal 102,228 2017-2019 0.082 Yes 3 / 3  
 
12/15/1995 08/26/1996
61 FR 43668
Washington Area VA Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 2,359,584 2017-2019 0.096 Yes 27 / 27 08/25/2008
73 FR 43360
   
Washington Area DC Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 601,723 2017-2019 0.096 Yes 27 / 27 08/25/2008
73 FR 43360
   
Washington Area MD Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 2,303,870 2017-2019 0.096 Yes 27 / 26 08/25/2008
73 FR 43360
   
York Area PA Nonattainment (NAAQS revoked) 11/15/1990 Marginal 536,379 2017-2019 0.076 Yes 8 / 8 03/20/1995
60 FR 3349
   
Youngstown-Warren-Sharon Area PA Nonattainment (NAAQS revoked) 11/15/1990 Marginal 116,638 2017-2019 0.078 Yes 9 / 9 03/20/1995
60 FR 3349
   
Youngstown-Warren-Sharon Area OH 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
Yuba City Area CA Nonattainment (NAAQS revoked) 11/15/1990 Transitional 136,872 2017-2019 0.095 Yes 2 / 0  
 
02/26/1997  
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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.