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8-Hour Ozone (2015) Designated Area Design Values

Data is current as of March 31, 2024

8-Hour Ozone (2015) Notes 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 05/16/2022
(2019-2021)		  
Area Name  Design
Values 		 Monitoring
Years 		 Design Values  Meets
NAAQS
Determin.1 		 Current Status  class sort Current
Classification
or at Redesignation 		 2010
Population 
click area name for state/county list click for
classif. history
Allegan County, MI 0.075 2014-2016 0.075 No Nonattainment E Moderate 46,615
Amador County, CA 0.073 2014-2016 0.067 Yes Nonattainment F Marginal 38,091
Atlanta, GA 0.075 2014-2016 0.068 Yes Maintenance F Marginal 3,669,376
Baltimore, MD 0.073 2014-2016 0.072 No Nonattainment E Moderate 2,662,691
Berrien County, MI 0.074 2014-2016 0.071 No Nonattainment E Moderate 156,813
Butte County, CA 0.075 2014-2016 0.070 Yes Nonattainment F Marginal 220,000
Calaveras County, CA 0.076 2014-2016 0.070 Yes Nonattainment F Marginal 45,578
Chicago, IL-IN-WI 0.077 2014-2016 0.075 No Nonattainment E Moderate 9,074,644
Cincinnati, OH-KY 0.072 2014-2016 0.070 Yes Maintenance F Marginal 1,928,528
Cincinnati, OH-KY 0.072 2014-2016 0.070 Yes Maintenance E Moderate 1,928,528
Cleveland, OH 0.075 2014-2016 0.072 No Nonattainment E Moderate 2,780,440
Columbus, OH 0.071 2014-2016 0.066 Yes Maintenance F Marginal 1,650,276
Dallas-Fort Worth, TX 0.08 2014-2016 0.076 No Nonattainment E Moderate 6,202,076
Denver Metro/North Front Range, CO 0.08 2014-2016 0.083 No Nonattainment E Moderate 3,331,223
Detroit, MI 0.073 2014-2016 0.070 Yes Maintenance E Moderate 4,704,743
Door County, WI 0.072 2014-2016 0.070 Yes Maintenance G Marginal (Rural Transport) 31
Door County-Revised, WI 0.072 2014-2016 0.070 Yes Maintenance G Marginal (Rural Transport) 17,004
El Paso-Las Cruces, TX-NM 0.072 2014-2016 0.080 No Nonattainment F Marginal 813,322
Greater Connecticut, CT 0.074 2014-2016 0.073 No Nonattainment E Moderate 1,629,115
Houston-Galveston-Brazoria, TX 0.079 2014-2016 0.077 No Nonattainment E Moderate 5,773,151
Imperial County, CA 0.076 2014-2016 0.080 No Nonattainment F Marginal 174,528
Kern County (Eastern Kern), CA 0.084 2014-2016 Insufficient Data Nonattainment D Serious 95,066
Las Vegas, NV 0.074 2014-2016 0.073 No Nonattainment E Moderate 1,892,250
Los Angeles-San Bernardino Counties (West Mojave Desert), CA 0.091 2014-2016 0.090 No Nonattainment C Severe 15 866,960
Los Angeles-South Coast Air Basin, CA 0.108 2014-2016 0.114 No Nonattainment A Extreme 15,702,771
Louisville, KY-IN 0.074 2014-2016 0.069 Yes Nonattainment F Marginal 1,060,541
Manitowoc County, WI 0.072 2014-2016 0.068 Yes Maintenance F Marginal 56,623
Mariposa County, CA 0.075 2014-2016 0.081 No Nonattainment E Moderate 18,251
Milwaukee, WI 0.073 2014-2016 0.073 No Nonattainment E Moderate 1,647,684
Morongo Band of Mission Indians, CA 0.097 2014-2016 0.095 No Nonattainment D Serious 932
Muskegon County, MI 0.075 2014-2016 0.074 No Nonattainment E Moderate 146,852
Nevada County (Western part), CA 0.083 2014-2016 0.080 No Nonattainment D Serious 82,042
New York-Northern New Jersey-Long Island, NY-NJ-CT 0.083 2014-2016 0.082 No Nonattainment E Moderate 20,217,137
Northern Wasatch Front, UT 0.075 2014-2016 0.078 No Nonattainment E Moderate 1,615,574
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation 0.071 2014-2016 0.072 No Nonattainment E Moderate 652
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE 0.077 2014-2016 0.071 No Nonattainment E Moderate 7,437,135
Phoenix-Mesa, AZ 0.077 2014-2016 0.080 No Nonattainment E Moderate 3,945,140
Riverside County (Coachella Valley), CA 0.087 2014-2016 0.086 No Nonattainment C Severe 15 425,029
Sacramento Metro, CA 0.085 2014-2016 0.082 No Nonattainment D Serious 2,240,448
San Antonio, TX 0.074 2015-2017 0.073 No Nonattainment E Moderate 1,714,773
San Diego County, CA 0.081 2014-2016 0.078 No Nonattainment C Severe 15 3,077,287
San Francisco Bay Area, CA 0.074 2014-2016 0.071 No Nonattainment F Marginal 6,969,365
San Joaquin Valley, CA 0.094 2014-2016 0.093 No Nonattainment A Extreme 3,841,897
San Luis Obispo (Eastern part), CA 0.073 2014-2016 0.072 No Nonattainment F Marginal 1,290
Sheboygan County, WI 0.079 2014-2016 0.072 No Nonattainment E Moderate 67,710
Southern Wasatch Front, UT 0.073 2014-2016 0.070 Yes Nonattainment F Marginal 515,895
St. Louis, MO-IL 0.072 2014-2016 0.069 Yes Nonattainment E Moderate 2,487,869
Sutter Buttes, CA 0.075 2014-2016 0.072 No Nonattainment F Marginal 3
Tuolumne County, CA 0.079 2014-2016 0.068 Yes Nonattainment F Marginal 55,365
Tuscan Buttes, CA 0.079 2014-2016 0.072 No Nonattainment G Marginal (Rural Transport) 0
Uinta Basin, UT 0.08 2014-2016 0.078 No Nonattainment F Marginal 47,317
Ventura County, CA 0.077 2014-2016 0.074 No Nonattainment D Serious 820,808
Washington, DC-MD-VA 0.072 2014-2016 0.070 Yes Nonattainment E Moderate 5,136,216
Yuma, AZ 0.074 2014-2016 0.067 Yes Nonattainment F Marginal 87,254

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

8-Hour Ozone (2015) Notes 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.

Multi-state areas are counted in maintenance totals when all states in the area have been redesignated.

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