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

Data is current as of September 30, 2021
Design Values in ppm. "Current Design Values" are current as of the posted Green Book date. Check the Air Quality Design Value site for design value updates.

Display:       Nonattainment and Maintenance Areas       Nonattainment Areas       Maintenance Areas

Click underlined column heading to change report order				Design Values at the Time of Designation		Current Design Values as of 05/05/2021 (2018-2020)
Area Name	State	Current Status	class sort	Current Classification or at Redesignation	Design Values	Monitoring Years	Design Values	Meets NAAQS Determin.1	No. Ctys	2010 Population	EPA Region
click area name for state/county list				click for classification history
						Total Areas		Total Ctys	Total Population (2010)
Nonattainment						36		176	98,819,117
Maintenance						80		259	67,043,896
Nonattainment and Maintenance						116		434	165,863,013
Albany-Schenectady-Troy, NY	NY	Nonattainment	G	Marginal	0.087	2001-2003	0.058	Yes	7	970,156	02
Allegan Co, MI	MI	Maintenance	I	Former Subpart 1	0.097	2001-2003	0.073	Yes	1	111,408	05
Allentown-Bethlehem-Easton, PA	PA	Maintenance	I	Former Subpart 1	0.091	2001-2003	0.066	Yes	3	712,481	03
Altoona, PA	PA	Maintenance	I	Former Subpart 1	0.085	2001-2003	0.063	Yes	1	127,089	03
Amador and Calaveras Cos. (Central Mountain Cos.), CA	CA	Nonattainment	E	Moderate	0.091	2001-2003	0.072	Yes	2	83,669	09
Atlanta, GA	GA	Maintenance	E	Moderate	0.091	2001-2003	0.070	Yes	20	5,260,436	04
Baltimore, MD	MD	Nonattainment	D	Serious	0.103	2001-2003	0.072	Yes	6	2,662,691	03
Baton Rouge, LA	LA	Maintenance	E	Moderate	0.086	2001-2003	0.069	Yes	5	732,587	06
Beaumont-Port Arthur, TX	TX	Maintenance	E	Moderate	0.091	2001-2003	0.068	Yes	3	388,745	06
Benton Harbor, MI	MI	Maintenance	I	Former Subpart 1	0.091	2001-2003	0.072	Yes	1	156,813	05
Benzie Co, MI	MI	Maintenance	I	Former Subpart 1	0.088	2001-2003	0.064	Yes	1	17,525	05
Birmingham, AL	AL	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.066	Yes	2	853,551	04
Boston-Lawrence-Worcester (E. Mass), MA	MA	Nonattainment	E	Moderate	0.095	2001-2003	0.066	Yes	10	5,723,468	01
Boston-Manchester-Portsmouth (SE), NH	NH	Maintenance	E	Moderate	0.095	2001-2003	0.063	Yes	4	740,556	01
Buffalo-Niagara Falls, NY	NY	Nonattainment	E	Moderate	0.099	2001-2003	0.066	Yes	2	1,135,509	02
Canton-Massillon, OH	OH	Maintenance	I	Former Subpart 1	0.090	2001-2003	0.066	Yes	1	375,586	05
Cass Co, MI	MI	Maintenance	G	Marginal	0.093	2001-2003	0.071	Yes	1	52,293	05
Charleston, WV	WV	Maintenance	I	Former Subpart 1	0.086	2001-2003		Insufficient Data	2	248,549	03
Charlotte-Gastonia-Rock Hill, NC-SC	NC	Maintenance	E	Moderate	0.100	2001-2003	0.067	Yes	7	1,789,799	04
Charlotte-Gastonia-Rock Hill, NC-SC	SC	Maintenance	E	Moderate	0.100	2001-2003	0.067	Yes	1	178,913	04
Chicago-Gary-Lake County, IL-IN	IL	Maintenance	E	Moderate	0.101	2001-2003	0.077	Yes	8	8,389,546	05
Chicago-Gary-Lake County, IL-IN	IN	Maintenance	E	Moderate	0.101	2001-2003	0.077	Yes	2	660,348	05
Chico, CA	CA	Nonattainment	G	Marginal	0.089	2001-2003	0.061	Yes	1	220,000	09
Cincinnati-Hamilton, OH-KY-IN	IN	Maintenance	I	Former Subpart 1	0.096	2001-2003	0.074	Yes	1	13,516	05
Cincinnati-Hamilton, OH-KY-IN	KY	Maintenance	I	Former Subpart 1	0.096	2001-2003	0.074	Yes	3	368,867	04
Cincinnati-Hamilton, OH-KY-IN	OH	Maintenance	I	Former Subpart 1	0.096	2001-2003	0.074	Yes	5	1,622,600	05
Clarksville-Hopkinsville, TN-KY	KY	Maintenance	I	Former Subpart 1	0.085	2001-2003	0.058	Yes	1	73,955	04
Clarksville-Hopkinsville, TN-KY	TN	Maintenance	I	Former Subpart 1	0.085	2001-2003	0.058	Yes	1	172,331	04
Clearfield and Indiana Cos, PA	PA	Maintenance	I	Former Subpart 1	0.090	2001-2003	0.066	Yes	2	170,522	03
Cleveland-Akron-Lorain, OH	OH	Maintenance	E	Moderate	0.103	2001-2003	0.074	Yes	8	2,881,937	05
Columbus, OH	OH	Maintenance	I	Former Subpart 1	0.095	2001-2003	0.067	Yes	6	1,754,632	05
Dallas-Fort Worth, TX	TX	Nonattainment	D	Serious	0.100	2001-2003	0.076	Yes	9	6,221,286	06
Dayton-Springfield, OH	OH	Maintenance	I	Former Subpart 1	0.090	2001-2003	0.069	Yes	4	937,565	05
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO	CO	Nonattainment	G	Marginal	0.087	2005-2007	0.081	Yes	9	3,330,139	08
Detroit-Ann Arbor, MI	MI	Maintenance	G	Marginal	0.097	2001-2003	0.072	Yes	8	4,804,635	05
Door Co, WI	WI	Maintenance	I	Former Subpart 1	0.094	2001-2003	0.072	Yes	1	27,785	05
Erie, PA	PA	Maintenance	I	Former Subpart 1	0.092	2001-2003	0.062	Yes	1	280,566	03
Essex Co (Whiteface Mtn), NY	NY	Nonattainment	G	Marginal	0.091	2001-2003	0.064	Yes	1	465	02
Evansville, IN	IN	Maintenance	I	Former Subpart 1	0.085	2001-2003	0.066	Yes	2	239,392	05
Flint, MI	MI	Maintenance	I	Former Subpart 1	0.090	2001-2003	0.065	Yes	2	514,109	05
Fort Wayne, IN	IN	Maintenance	I	Former Subpart 1	0.088	2001-2003	0.066	Yes	1	355,329	05
Franklin Co, PA	PA	Maintenance	I	Former Subpart 1	0.093	2001-2003	0.056	Yes	1	149,618	03
Fredericksburg, VA	VA	Maintenance	E	Moderate	0.099	2001-2003	0.059	Yes	3	275,644	03
Grand Rapids, MI	MI	Maintenance	I	Former Subpart 1	0.089	2001-2003	0.071	Yes	2	866,423	05
Greater Connecticut, CT	CT	Nonattainment	E	Moderate	0.095	2001-2003	0.073	Yes	5	1,629,115	01
Greene Co, IN	IN	Maintenance	I	Former Subpart 1	0.088	2001-2003	0.064	Yes	1	33,165	05
Greene Co, PA	PA	Maintenance	I	Former Subpart 1	0.089	2001-2003	0.061	Yes	1	38,686	03
Hancock, Knox, Lincoln and Waldo Cos, ME	ME	Maintenance	I	Former Subpart 1	0.094	2001-2003	0.065	Yes	4	97,265	01
Harrisburg-Lebanon-Carlisle, PA	PA	Maintenance	I	Former Subpart 1	0.088	2001-2003	0.063	Yes	4	683,043	03
Haywood and Swain Cos (Great Smoky NP), NC	NC	Maintenance	I	Former Subpart 1	0.085	2001-2003	0.063	Yes	2	4,273	04
Houston-Galveston-Brazoria, TX	TX	Nonattainment	C	Severe 15	0.102	2001-2003	0.079	Yes	8	5,891,999	06
Huntington-Ashland, WV-KY	KY	Maintenance	I	Former Subpart 1	0.091	2001-2003	0.061	Yes	1	49,542	04
Huntington-Ashland, WV-KY	WV	Maintenance	I	Former Subpart 1	0.091	2001-2003	0.061	Yes	2	138,800	03
Huron Co, MI	MI	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.068	Yes	1	33,118	05
Imperial Co, CA	CA	Nonattainment	E	Moderate	0.087	2001-2003	0.078	Yes	1	174,528	09
Indianapolis, IN	IN	Maintenance	I	Former Subpart 1	0.096	2001-2003	0.069	Yes	9	1,834,672	05
Inland Sheboygan County, WI	WI	Nonattainment	E	Moderate	0.100	2001-2003	0.066	Yes	1	53,851	05
Jackson Co, IN	IN	Maintenance	I	Former Subpart 1	0.085	2001-2003		Insufficient Data	1	42,376	05
Jamestown, NY	NY	Nonattainment	E	Moderate	0.094	2001-2003	0.066	Yes	1	134,905	02
Jefferson Co, NY	NY	Nonattainment	E	Moderate	0.097	2001-2003	0.061	Yes	1	116,229	02
Johnstown, PA	PA	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.057	Yes	1	143,679	03
Kalamazoo-Battle Creek, MI	MI	Maintenance	I	Former Subpart 1	0.086	2001-2003	0.068	Yes	3	462,735	05
Kent and Queen Anne's Cos, MD	MD	Maintenance	G	Marginal	0.095	2001-2003	0.065	Yes	2	67,995	03
Kern Co (Eastern Kern), CA	CA	Nonattainment	E	Moderate	0.098	2001-2003	0.086	No	1	95,314	09
Kewaunee Co, WI	WI	Maintenance	I	Former Subpart 1	0.093	2001-2003	0.065	Yes	1	20,574	05
Knoxville, TN	TN	Maintenance	I	Former Subpart 1	0.092	2001-2003	0.063	Yes	7	821,883	04
La Porte Co., IN	IN	Maintenance	G	Marginal	0.093	2001-2003	0.077	Yes	1	111,467	05
Lancaster, PA	PA	Maintenance	G	Marginal	0.092	2001-2003	0.065	Yes	1	519,445	03
Lansing-East Lansing, MI	MI	Maintenance	I	Former Subpart 1	0.086	2001-2003	0.063	Yes	3	464,036	05
Las Vegas, NV	NV	Maintenance	G	Marginal	0.086	2001-2003	0.074	Yes	1	1,918,819	09
Lima, OH	OH	Maintenance	I	Former Subpart 1	0.089	2001-2003	0.068	Yes	1	106,331	05
Los Angeles-San Bernardino Cos. (W Mojave Desert), CA	CA	Nonattainment	C	Severe 15	0.106	2001-2003	0.090	No	2	868,350	09
Los Angeles-South Coast Air Basin, CA	CA	Nonattainment	A	Extreme	0.131	2001-2003	0.114	No	4	15,715,184	09
Louisville, KY-IN	IN	Maintenance	I	Former Subpart 1	0.092	2001-2003	0.070	Yes	2	184,810	05
Louisville, KY-IN	KY	Maintenance	I	Former Subpart 1	0.092	2001-2003	0.070	Yes	3	875,731	04
Macon, GA	GA	Maintenance	I	Former Subpart 1	0.086	2001-2003	0.061	Yes	2	158,123	04
Madison and Page Cos (Shenandoah NP), VA	VA	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.058	Yes	2	2,026	03
Manitowoc Co, WI	WI	Maintenance	I	Former Subpart 1	0.090	2001-2003	0.071	Yes	1	81,442	05
Mariposa and Tuolumne Cos (Southern Mtn), CA	CA	Nonattainment	E	Moderate	0.091	2001-2003	0.080	Yes	2	73,616	09
Mason Co, MI	MI	Maintenance	I	Former Subpart 1	0.089	2001-2003	0.064	Yes	1	28,705	05
Memphis, TN-AR	AR	Maintenance	E	Moderate	0.092	2001-2003	0.067	Yes	1	50,902	06
Memphis, TN-AR	TN	Maintenance	E	Moderate	0.092	2001-2003	0.067	Yes	1	927,644	04
Milwaukee-Racine, WI	WI	Maintenance	E	Moderate	0.101	2001-2003	0.074	Yes	6	1,917,742	05
Morongo Band of Mission Indians	CA	Nonattainment	B	Severe 17			0.099	No	1	913	09
Muncie, IN	IN	Maintenance	I	Former Subpart 1	0.088	2001-2003	0.063	Yes	1	117,671	05
Murray Co (Chattahoochee Nat Forest), GA	GA	Maintenance	I	Former Subpart 1	0.085	2001-2003	0.062	Yes	1	6,231	04
Muskegon, MI	MI	Maintenance	G	Marginal	0.095	2001-2003	0.076	Yes	1	172,188	05
Nevada Co. (Western part), CA	CA	Nonattainment	E	Moderate	0.098	2001-2003	0.084	Yes	1	82,393	09
New York-N. New Jersey-Long Island, NY-NJ-CT	CT	Nonattainment	E	Moderate	0.102	2001-2003	0.082	Yes	3	1,944,982	01
New York-N. New Jersey-Long Island, NY-NJ-CT	NJ	Nonattainment	E	Moderate	0.102	2001-2003	0.082	Yes	12	6,003,340	02
New York-N. New Jersey-Long Island, NY-NJ-CT	NY	Nonattainment	E	Moderate	0.102	2001-2003	0.082	Yes	9	12,268,815	02
Norfolk-Virginia Beach-Newport News (Hampton Roads), VA	VA	Maintenance	G	Marginal	0.090	2001-2003	0.058	Yes	13	1,632,100	03
Parkersburg-Marietta, WV-OH	OH	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.062	Yes	1	61,778	05
Parkersburg-Marietta, WV-OH	WV	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.062	Yes	1	86,956	03
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation	CA	Maintenance	B	Severe 17			0.078	Yes	2	2,844	09
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE	DE	Nonattainment	E	Moderate	0.106	2001-2003	0.074	Yes	3	897,934	03
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE	MD	Nonattainment	E	Moderate	0.106	2001-2003	0.074	Yes	1	101,108	03
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE	NJ	Nonattainment	E	Moderate	0.106	2001-2003	0.074	Yes	9	2,788,554	02
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE	PA	Nonattainment	E	Moderate	0.106	2001-2003	0.074	Yes	5	4,008,994	03
Phoenix-Mesa, AZ	AZ	Maintenance	G	Marginal	0.087	2001-2003	0.079	Yes	2	3,848,627	09
Pittsburgh-Beaver Valley, PA	PA	Nonattainment	E	Moderate	0.094	2001-2003	0.068	Yes	7	2,356,285	03
Portland, ME	ME	Maintenance	G	Marginal	0.091	2001-2003	0.064	Yes	4	481,641	01
Poughkeepsie, NY	NY	Nonattainment	E	Moderate	0.094	2001-2003	0.062	Yes	3	770,011	02
Providence (all of RI), RI	RI	Nonattainment	E	Moderate	0.095	2001-2003	0.069	Yes	5	1,052,567	01
Raleigh-Durham-Chapel Hill, NC	NC	Maintenance	I	Former Subpart 1	0.094	2001-2003	0.060	Yes	8	1,663,630	04
Reading, PA	PA	Maintenance	I	Former Subpart 1	0.091	2001-2003	0.067	Yes	1	411,442	03
Richmond-Petersburg, VA	VA	Maintenance	G	Marginal	0.094	2001-2003	0.061	Yes	9	1,042,651	03
Riverside Co. (Coachella Valley), CA	CA	Nonattainment	A	Extreme	0.108	2001-2003	0.088	No	1	425,425	09
Rochester, NY	NY	Nonattainment	G	Marginal	0.088	2001-2003	0.063	Yes	6	1,114,402	02
Rocky Mount, NC	NC	Maintenance	I	Former Subpart 1	0.089	2001-2003	0.058	Yes	2	152,392	04
Sacramento Metro, CA	CA	Nonattainment	C	Severe 15	0.107	2001-2003	0.084	Yes	6	2,243,911	09
San Diego, CA	CA	Maintenance	E	Moderate	0.093	2001-2003	0.079	Yes	1	3,093,345	09
San Francisco Bay Area, CA	CA	Nonattainment	G	Marginal	0.086	2001-2003	0.069	Yes	9	6,970,997	09
San Joaquin Valley, CA	CA	Nonattainment	A	Extreme	0.115	2001-2003	0.093	No	8	3,842,586	09
Scranton-Wilkes-Barre, PA	PA	Maintenance	I	Former Subpart 1	0.086	2001-2003	0.061	Yes	4	733,473	03
Shoreline Sheboygan County, WI	WI	Nonattainment	E	Moderate			0.075	Yes	1	61,656	05
South Bend-Elkhart, IN	IN	Maintenance	I	Former Subpart 1	0.093	2001-2003	0.067	Yes	2	464,490	05
Springfield (W. Mass), MA	MA	Nonattainment	E	Moderate	0.094	2001-2003	0.065	Yes	4	824,161	01
St. Louis, MO-IL	IL	Maintenance	E	Moderate	0.092	2001-2003	0.071	Yes	4	595,280	05
St. Louis, MO-IL	MO	Maintenance	E	Moderate	0.092	2001-2003	0.071	Yes	5	1,998,958	07
State College, PA	PA	Maintenance	I	Former Subpart 1	0.088	2001-2003	0.060	Yes	1	153,990	03
Steubenville-Weirton, OH-WV	OH	Maintenance	I	Former Subpart 1	0.086	2001-2003	0.062	Yes	1	69,709	05
Steubenville-Weirton, OH-WV	WV	Maintenance	I	Former Subpart 1	0.086	2001-2003	0.062	Yes	2	54,745	03
Sutter Co (Sutter Buttes), CA	CA	Nonattainment	G	Marginal	0.088	2001-2003	0.076	Yes	1	33	09
Terre Haute, IN	IN	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.065	Yes	1	107,848	05
Tioga Co, PA	PA	Maintenance	I	Former Subpart 1	0.086	2001-2003		Insufficient Data	1	41,981	03
Toledo, OH	OH	Maintenance	I	Former Subpart 1	0.093	2001-2003	0.073	Yes	2	567,303	05
Ventura Co, CA	CA	Nonattainment	D	Serious	0.095	2001-2003	0.077	Yes	1	823,360	09
Washington, DC-MD-VA	DC	Nonattainment	E	Moderate	0.099	2001-2003	0.070	Yes	1	601,723	03
Washington, DC-MD-VA	MD	Nonattainment	E	Moderate	0.099	2001-2003	0.070	Yes	5	2,303,870	03
Washington, DC-MD-VA	VA	Nonattainment	E	Moderate	0.099	2001-2003	0.070	Yes	9	2,230,623	03
Wheeling, WV-OH	OH	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.063	Yes	1	70,400	05
Wheeling, WV-OH	WV	Maintenance	I	Former Subpart 1	0.087	2001-2003	0.063	Yes	2	77,550	03
York, PA	PA	Maintenance	I	Former Subpart 1	0.089	2001-2003	0.063	Yes	2	536,379	03
Youngstown-Warren-Sharon, OH-PA	OH	Maintenance	I	Former Subpart 1	0.095	2001-2003	0.066	Yes	3	556,976	05
Youngstown-Warren-Sharon, OH-PA	PA	Maintenance	I	Former Subpart 1	0.095	2001-2003	0.066	Yes	1	116,638	03

¹ See the Air Quality Design Value site spreadsheet footnotes for information about "Insufficient Data" Meets NAAQS Determinations.

Design Values in ppm. "Current Design Values" are current as of the posted Green Book date. Check the Air Quality Design Value site for design value updates.

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

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