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Alaska Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants

Data is current as of February 28, 2025

Listed by County, NAAQS, Area. The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.

* The 1997 Primary Annual PM-2.5 NAAQS (level of 15 µg/m3) is revoked in attainment and maintenance areas for that NAAQS. For additional information see the PM-2.5 NAAQS SIP Requirements Final Rule, effective October 24, 2016. (81 FR 58009)

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Important Notes Download National Dataset: dbf   |   xls    |   Data dictionary (PDF)
County NAAQS Area Name Nonattainment in Year Redesignation
to Maintenance		 Classification Whole or/
Part County		 Population
(2010)		 State/
County
FIPS Codes
ALASKA
Anchorage Municipality Carbon Monoxide (1971) Anchorage, AK
92 93 94 95 96 97 98 99 00 01 02 03                                                                                                              
07/23/2004 Serious Part 286,227 02/020
Anchorage Municipality PM-10 (1987) Anchorage; Eagle River, AK
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12                                                                 
03/08/2013 Moderate Part 219,193 02/020
Fairbanks North Star Borough Carbon Monoxide (1971) Fairbanks, AK
92 93 94 95 96 97 98 99 00 01 02 03                                                                                                              
09/27/2004 Serious Part 46,211 02/090
Fairbanks North Star Borough PM-2.5 (2006) Fairbanks, AK
                                                                                     09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
/ / Serious Part 87,456 02/090
Juneau City and Borough PM-10 (1987) Juneau; Mendenhall Valley area, AK
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12                                                                 
07/08/2013 Moderate Part 14,030 02/110
Important Notes

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