Designated 8-Hr Ozone Compared to 2006 PM-2.5 and 1997 PM-2.5 Nonattainment Areas

As of August 30, 2011

Mouse over the No. Ctys to see the area name; click on them to see the associated counties. [Split] in No. Ctys column explained here.

		1997 8-Hr Ozone Nonattainment Areas				2006 PM-2.5 Nonattainment Areas				1997 PM-2.5 Nonattainment Areas
State(s)	Area Name	2000 Pop.	No. Ctys	Category/ Class	Design Value (2001-2003)	2000 Pop.	No. Ctys	Class	24-hr Design Value (2006-2008)	2000 Pop.	No. Ctys	Class	Annual Design Value (2001-2003)
AZ	Phoenix-Mesa	3,086,045	2	Subpar	0.087
CA	Amador and Calaveras Cos (Central Mtn),	75,654	2	Subpar	0.091
CA	Chico	203,171	1	Subpar	0.089	198,921	1	NonAtt	69
CA	Imperial County	142,361	1	Mod	0.087	123,231	1	NonAtt	36
CA	Kern Co (Eastern Kern)	99,251	1	Subpar	0.098
CA	Los Angeles-San Bernardino Cos(W Mojave)	656,408	2	Mod	0.106
CA	Los Angeles-South Coast Air Basin	14,593,587	4	Ext	0.131	14,593,587	4	NonAtt	49	14,593,587	4	NonAtt	27.8
CA	Mariposa and Tuolumne Cos (Southern Mtn)	71,631	2	Subpar	0.091
CA	Nevada Co. (Western Part)	77,735	1	Subpar	0.098
CA	Riverside Co, (Coachella Valley)	324,750	1	Sev5	0.108
CA	Sacramento Metro	1,978,348	6	Sev5	0.107	1,916,480	5	NonAtt	56
CA	San Diego	2,813,431	1	Subpar	0.093
CA	San Francisco-Bay Area	6,541,828	9	Mar	0.086	6,541,828	9	NonAtt	36
CA	San Joaquin Valley	3,191,367	8	Ext	0.115	3,191,367	8	NonAtt	70	3,191,367	8	NonAtt	21.8
CA	Sutter Co (Sutter Buttes)	1	1	Subpar	0.088
CA						136,522	2	NonAtt	47
CA	Ventura County	753,197	1	Ser	0.095
CO	Denver-Boulder-Greeley-Ft Collins-Love.	2,811,580	9	Subpar	0.087
CT	Greater Connecticut	1,543,919	5	Mod	0.095
DC-MD-VA	Washington	4,452,498	15	Mod	0.099					4,377,935	14	NonAtt	15.8
GA	Atlanta	4,228,492	20	Mod	0.091					4,231,750	22	NonAtt	18.0
IL-IN	Chicago-Gary-Lake County	8,757,808	10 [Split]	Mod	0.101					8,757,808	10	NonAtt	17.7
LA	Baton Rouge	636,214	5	Mod	0.086
MA	Boston-Lawrence-Worcester (E. Mass)	5,534,130	10	Mod	0.095
MA	Springfield (Western Mass)	814,967	4	Mod	0.094
MD	Baltimore	2,512,431	6	Mod	0.103					2,512,431	6	NonAtt	16.7
MO-IL	St. Louis	2,504,603	9	Mod	0.092					2,486,562	9	NonAtt	17.5
NC-SC	Charlotte-Gastonia-Rock Hill	1,476,564	8	Mod	0.100
NH	Boston-Manchester-Portsmouth(SE)	696,713	4	Mod	0.095
NV	Las Vegas	1,348,864	1	Subpar	0.086
NY	Albany-Schenectady-Troy	923,778	7	Subpar	0.087
NY	Buffalo-Niagara Falls	1,170,111	2	Subpar	0.099
NY	Essex County; Whiteface Mountain	1,000	1	Subpar	0.091
NY	Jamestown	139,750	1	Subpar	0.094
NY	Jefferson County	111,738	1	Mod	0.097
NY	Poughkeepsie	717,262	3	Mod	0.094
NY	Rochester	1,098,201	6	Subpar	0.088
NY-NJ-CT	New York-N. New Jersey-Long Island	19,634,122	24	Mod	0.102	19,802,587	22	NonAtt	38	19,802,587	22	NonAtt	17.7
PA	Pittsburgh-Beaver Valley	2,431,087	7	Subpar	0.094	2,195,156	8	NonAtt	36	2,195,054	8	NonAtt	21.2
PA						21,519	1	NonAtt	53	21,600	1	NonAtt	21.2
PA-NJ-MD-DE	Philadelphia-Wilmin-Atlantic City	7,333,475	18	Mod	0.106	5,536,911	9	NonAtt	36	5,536,911	9	NonAtt	16.4
RI	Providence (all of RI)	1,048,319	5	Mod	0.095
TX	Dallas-Fort Worth	5,030,828	9	Ser	0.100
TX	Houston-Galveston-Brazoria	4,669,571	8	Sev5	0.102
WI	Milwaukee-Racine	1,839,149	6	Mod	0.101	1,489,762	3	NonAtt	37
WI	Sheboygan	112,646	1	Mod	0.100

Area Name:

The "State(s) Area Name" column contains a common or general name for the nonattainment areas on the row, but may not reflect the exact name of any area on the row. This column cannot be exact since the nonattainment area for one pollutant may not contain the same counties, cities, or states as the nonattainment area for another pollutant on the same row. to see the area name or click on them to see the associated counties. The abbreviations listed in the "State(s)" column reflect all states identified in row. However, some states on a row may be nonattainment for some pollutants and not for others in the general area.

Split Area:

'Split' in the No. Ctys column indicates that the multi-state area has states that have been redesignated but the area does not become a maintenance area until all states in the area are redesignated. Clicking on a "Split" No. Ctys will display information for the state(s) that have not been redesignated.

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