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8-Hour Ozone (1997) Designated Area/State Information - NAAQS Revoked

Data is current as of January 31, 2018

Display:       Nonattainment and Maintenance Areas       Nonattainment Areas       Maintenance Areas
Area Name  State  Current Status  class sort Current
Classification
or at
Redesignation
 
No.
Counties
 
2010
Population
 
EPA
Region
 
Click underlined column heading to change report order.
click area name for state/county list
click for
Classification history
 
Total
Areas

Total
Counties
Total
Population
(2010)
 
Nonattainment 35 176 98,819,117  
Maintenance 80 259 67,043,896  
Nonattainment and Maintenance 115 434 165,863,013  
Albany-Schenectady-Troy, NY NY Nonattainment G Marginal 7 970,156 02
Allegan Co, MI MI Maintenance I Former Subpart 1 1 111,408 05
Allentown-Bethlehem-Easton, PA PA Maintenance I Former Subpart 1 3 712,481 03
Altoona, PA PA Maintenance I Former Subpart 1 1 127,089 03
Amador and Calaveras Cos. (Central Mountain Cos.), CA CA Nonattainment E Moderate 2 83,669 09
Atlanta, GA GA Maintenance E Moderate 20 5,260,436 04
Baltimore, MD MD Nonattainment D Serious 6 2,662,691 03
Baton Rouge, LA LA Maintenance E Moderate 5 732,587 06
Beaumont-Port Arthur, TX TX Maintenance E Moderate 3 388,745 06
Benton Harbor, MI MI Maintenance I Former Subpart 1 1 156,813 05
Benzie Co, MI MI Maintenance I Former Subpart 1 1 17,525 05
Birmingham, AL AL Maintenance I Former Subpart 1 2 853,551 04
Boston-Lawrence-Worcester (E. Mass), MA MA Nonattainment E Moderate 10 5,723,468 01
Boston-Manchester-Portsmouth (SE), NH NH Maintenance E Moderate 4 740,556 01
Buffalo-Niagara Falls, NY NY Nonattainment E Moderate 2 1,135,509 02
Canton-Massillon, OH OH Maintenance I Former Subpart 1 1 375,586 05
Cass Co, MI MI Maintenance G Marginal 1 52,293 05
Charleston, WV WV Maintenance I Former Subpart 1 2 248,549 03
Charlotte-Gastonia-Rock Hill, NC-SC NC Maintenance E Moderate 7 1,789,799 04
Charlotte-Gastonia-Rock Hill, NC-SC SC Maintenance E Moderate 1 178,913 04
Chicago-Gary-Lake County, IL-IN IL Maintenance E Moderate 8 8,389,546 05
Chicago-Gary-Lake County, IL-IN IN Maintenance E Moderate 2 660,348 05
Chico, CA CA Nonattainment G Marginal 1 220,000 09
Cincinnati-Hamilton, OH-KY-IN IN Maintenance I Former Subpart 1 1 13,516 05
Cincinnati-Hamilton, OH-KY-IN KY Maintenance I Former Subpart 1 3 368,867 04
Cincinnati-Hamilton, OH-KY-IN OH Maintenance I Former Subpart 1 5 1,622,600 05
Clarksville-Hopkinsville, TN-KY KY Maintenance I Former Subpart 1 1 73,955 04
Clarksville-Hopkinsville, TN-KY TN Maintenance I Former Subpart 1 1 172,331 04
Clearfield and Indiana Cos, PA PA Maintenance I Former Subpart 1 2 170,522 03
Cleveland-Akron-Lorain, OH OH Maintenance E Moderate 8 2,881,937 05
Columbus, OH OH Maintenance I Former Subpart 1 6 1,754,632 05
Dallas-Fort Worth, TX TX Nonattainment D Serious 9 6,221,286 06
Dayton-Springfield, OH OH Maintenance I Former Subpart 1 4 937,565 05
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO CO Nonattainment G Marginal 9 3,330,139 08
Detroit-Ann Arbor, MI MI Maintenance G Marginal 8 4,804,635 05
Door Co, WI WI Maintenance I Former Subpart 1 1 27,785 05
Erie, PA PA Maintenance I Former Subpart 1 1 280,566 03
Essex Co (Whiteface Mtn), NY NY Nonattainment G Marginal 1 465 02
Evansville, IN IN Maintenance I Former Subpart 1 2 239,392 05
Flint, MI MI Maintenance I Former Subpart 1 2 514,109 05
Fort Wayne, IN IN Maintenance I Former Subpart 1 1 355,329 05
Franklin Co, PA PA Maintenance I Former Subpart 1 1 149,618 03
Fredericksburg, VA VA Maintenance E Moderate 3 275,644 03
Grand Rapids, MI MI Maintenance I Former Subpart 1 2 866,423 05
Greater Connecticut, CT CT Nonattainment E Moderate 5 1,629,115 01
Greene Co, IN IN Maintenance I Former Subpart 1 1 33,165 05
Greene Co, PA PA Maintenance I Former Subpart 1 1 38,686 03
Hancock, Knox, Lincoln and Waldo Cos, ME ME Maintenance I Former Subpart 1 4 97,265 01
Harrisburg-Lebanon-Carlisle, PA PA Maintenance I Former Subpart 1 4 683,043 03
Haywood and Swain Cos (Great Smoky NP), NC NC Maintenance I Former Subpart 1 2 4,273 04
Houston-Galveston-Brazoria, TX TX Nonattainment C Severe 15 8 5,891,999 06
Huntington-Ashland, WV-KY KY Maintenance I Former Subpart 1 1 49,542 04
Huntington-Ashland, WV-KY WV Maintenance I Former Subpart 1 2 138,800 03
Huron Co, MI MI Maintenance I Former Subpart 1 1 33,118 05
Imperial Co, CA CA Nonattainment E Moderate 1 174,528 09
Indianapolis, IN IN Maintenance I Former Subpart 1 9 1,834,672 05
Jackson Co, IN IN Maintenance I Former Subpart 1 1 42,376 05
Jamestown, NY NY Nonattainment E Moderate 1 134,905 02
Jefferson Co, NY NY Nonattainment E Moderate 1 116,229 02
Johnstown, PA PA Maintenance I Former Subpart 1 1 143,679 03
Kalamazoo-Battle Creek, MI MI Maintenance I Former Subpart 1 3 462,735 05
Kent and Queen Anne's Cos, MD MD Maintenance G Marginal 2 67,995 03
Kern Co (Eastern Kern), CA CA Nonattainment E Moderate 1 95,314 09
Kewaunee Co, WI WI Maintenance I Former Subpart 1 1 20,574 05
Knoxville, TN TN Maintenance I Former Subpart 1 7 821,883 04
La Porte Co., IN IN Maintenance G Marginal 1 111,467 05
Lancaster, PA PA Maintenance G Marginal 1 519,445 03
Lansing-East Lansing, MI MI Maintenance I Former Subpart 1 3 464,036 05
Las Vegas, NV NV Maintenance G Marginal 1 1,918,819 09
Lima, OH OH Maintenance I Former Subpart 1 1 106,331 05
Los Angeles-San Bernardino Cos. (W Mojave Desert), CA CA Nonattainment C Severe 15 2 868,350 09
Los Angeles-South Coast Air Basin, CA CA Nonattainment A Extreme 4 15,715,184 09
Louisville, KY-IN IN Maintenance I Former Subpart 1 2 184,810 05
Louisville, KY-IN KY Maintenance I Former Subpart 1 3 875,731 04
Macon, GA GA Maintenance I Former Subpart 1 2 158,123 04
Madison and Page Cos (Shenandoah NP), VA VA Maintenance I Former Subpart 1 2 2,026 03
Manitowoc Co, WI WI Maintenance I Former Subpart 1 1 81,442 05
Mariposa and Tuolumne Cos (Southern Mtn), CA CA Nonattainment E Moderate 2 73,616 09
Mason Co, MI MI Maintenance I Former Subpart 1 1 28,705 05
Memphis, TN-AR AR Maintenance E Moderate 1 50,902 06
Memphis, TN-AR TN Maintenance E Moderate 1 927,644 04
Milwaukee-Racine, WI WI Maintenance E Moderate 6 1,917,742 05
Morongo Band of Mission Indians CA Nonattainment B Severe 17 1 913 09
Muncie, IN IN Maintenance I Former Subpart 1 1 117,671 05
Murray Co (Chattahoochee Nat Forest), GA GA Maintenance I Former Subpart 1 1 6,231 04
Muskegon, MI MI Maintenance G Marginal 1 172,188 05
Nevada Co. (Western part), CA CA Nonattainment E Moderate 1 82,393 09
New York-N. New Jersey-Long Island, NY-NJ-CT CT Nonattainment E Moderate 3 1,944,982 01
New York-N. New Jersey-Long Island, NY-NJ-CT NJ Nonattainment E Moderate 12 6,003,340 02
New York-N. New Jersey-Long Island, NY-NJ-CT NY Nonattainment E Moderate 9 12,268,815 02
Norfolk-Virginia Beach-Newport News (Hampton Roads), VA VA Maintenance G Marginal 13 1,632,100 03
Parkersburg-Marietta, WV-OH OH Maintenance I Former Subpart 1 1 61,778 05
Parkersburg-Marietta, WV-OH WV Maintenance I Former Subpart 1 1 86,956 03
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation CA Maintenance B Severe 17 2 2,844 09
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE DE Nonattainment E Moderate 3 897,934 03
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE MD Nonattainment E Moderate 1 101,108 03
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE NJ Nonattainment E Moderate 9 2,788,554 02
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE PA Nonattainment E Moderate 5 4,008,994 03
Phoenix-Mesa, AZ AZ Maintenance G Marginal 2 3,848,627 09
Pittsburgh-Beaver Valley, PA PA Nonattainment E Moderate 7 2,356,285 03
Portland, ME ME Maintenance G Marginal 4 481,641 01
Poughkeepsie, NY NY Nonattainment E Moderate 3 770,011 02
Providence (all of RI), RI RI Nonattainment E Moderate 5 1,052,567 01
Raleigh-Durham-Chapel Hill, NC NC Maintenance I Former Subpart 1 8 1,663,630 04
Reading, PA PA Maintenance I Former Subpart 1 1 411,442 03
Richmond-Petersburg, VA VA Maintenance G Marginal 9 1,042,651 03
Riverside Co. (Coachella Valley), CA CA Nonattainment C Severe 15 1 425,425 09
Rochester, NY NY Nonattainment G Marginal 6 1,114,402 02
Rocky Mount, NC NC Maintenance I Former Subpart 1 2 152,392 04
Sacramento Metro, CA CA Nonattainment C Severe 15 6 2,243,911 09
San Diego, CA CA Maintenance E Moderate 1 3,093,345 09
San Francisco Bay Area, CA CA Nonattainment G Marginal 9 6,970,997 09
San Joaquin Valley, CA CA Nonattainment A Extreme 8 3,842,586 09
Scranton-Wilkes-Barre, PA PA Maintenance I Former Subpart 1 4 733,473 03
Sheboygan, WI WI Nonattainment E Moderate 1 115,507 05
South Bend-Elkhart, IN IN Maintenance I Former Subpart 1 2 464,490 05
Springfield (W. Mass), MA MA Nonattainment E Moderate 4 824,161 01
St. Louis, MO-IL IL Maintenance E Moderate 4 595,280 05
St. Louis, MO-IL MO Maintenance E Moderate 5 1,998,958 07
State College, PA PA Maintenance I Former Subpart 1 1 153,990 03
Steubenville-Weirton, OH-WV OH Maintenance I Former Subpart 1 1 69,709 05
Steubenville-Weirton, OH-WV WV Maintenance I Former Subpart 1 2 54,745 03
Sutter Co (Sutter Buttes), CA CA Nonattainment G Marginal 1 33 09
Terre Haute, IN IN Maintenance I Former Subpart 1 1 107,848 05
Tioga Co, PA PA Maintenance I Former Subpart 1 1 41,981 03
Toledo, OH OH Maintenance I Former Subpart 1 2 567,303 05
Ventura Co, CA CA Nonattainment D Serious 1 823,360 09
Washington, DC-MD-VA DC Nonattainment E Moderate 1 601,723 03
Washington, DC-MD-VA MD Nonattainment E Moderate 5 2,303,870 03
Washington, DC-MD-VA VA Nonattainment E Moderate 9 2,230,623 03
Wheeling, WV-OH OH Maintenance I Former Subpart 1 1 70,400 05
Wheeling, WV-OH WV Maintenance I Former Subpart 1 2 77,550 03
York, PA PA Maintenance I Former Subpart 1 2 536,379 03
Youngstown-Warren-Sharon, OH-PA OH Maintenance I Former Subpart 1 3 556,976 05
Youngstown-Warren-Sharon, OH-PA PA Maintenance I Former Subpart 1 1 116,638 03

County subtotals and grand totals may not equal sum of the counties. Part counties are only counted one time within groupings. Multi-state areas are counted only once in area totals, and are counted in maintenance totals when all states in the area have been redesignated.

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