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Designated PM-2.5 (1997, 2006, 2012) Nonattainment Areas

Data is current as of November 30, 2021

See PM-2.5 (2006) Notes for further details

Current and historical design value data can be found at https://www.epa.gov/air-trends/air-quality-design-values
  PM-2.5 (2012)
Nonattainment Areas
PM-2.5 (2006)
Nonattainment Areas
PM-2.5 (1997)
Nonattainment Areas
State(s) General Area Name 2010
Pop.
No.
Ctys
Cat./
Class
Current Annual
Design
Value
2010
Pop.
No.
Ctys
Cat./
Class
Current
24-hr
Design
Value
2010
Pop.
No.
Ctys
Cat./
Class
Current Annual
Design
Value
as of 05/24/2021
(2018-2020)
as of 05/24/2021
(2018-2020)
as of 05/24/2021
(2018-2020)
AK Fairbanks         87,456 1 Ser 68        
AZ Nogales         30,622 1 Mod 26        
AZ West Pinal         52,314 1 Mod 35        
CA Imperial County 154,061 1 Mod 12.1 154,061 1 Mod 34        
CA Los Angeles-South Coast Air Basin 15,716,242 4 Ser 14.2 15,716,242 4 Ser 37 15,716,335 4 Mod 14.2
CA Plumas County 5,843 1 Mod 15.9                
CA Sacramento Metro         2,206,060 5 Mod 85        
CA San Francisco-Bay Area         6,971,067 9 Mod 55        
CA San Joaquin Valley 3,842,165 8 Mod 17.6 3,842,165 8 Ser 72 3,842,165 8 Ser 17.6
ID Shoshone County 7,497 1 Mod 10.9                
MT Libby                 9,429 1 Mod 13.3
OR Klamath Falls         46,969 1 Mod 89        
OR Oakridge         4,261 1 Mod 81        
PA Pittsburgh-New Castle         20,789 1 Mod 32 20,789 1 Mod 11.1
   1,223,348 1 Mod 11.1                
UT Provo         517,537 1 Ser 31        
UT Salt Lake City         1,665,137 5 Ser 28        

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. The whole area population is displayed in this report. Clicking on a "Split" No. Ctys will display information for the state(s) that have not been redesignated.


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