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

Data is current as of February 29, 2024

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 The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.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
ARIZONA
Cochise County PM-10 (1987) Cochise County; Paul Spur/Douglas planning area, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 17,495 04/003
Cochise County Sulfur Dioxide (1971) Douglas (Cochise County), AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05                                                                                               
05/01/2006   Part 17,495 04/003
Gila County 8-Hour Ozone (2015) Phoenix-Mesa, AZ
                                                                                                                                  18 19 20 21 22 23 24
/ / Moderate Part 56 04/007
Gila County Lead (2008) Hayden, AZ
                                                                                                              14 15 16 17 18 19 20 21 22 23 24
/ /   Part 1,284 04/007
Gila County PM-10 (1987) Hayden, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 1,587 04/007
Gila County PM-10 (1987) Miami, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 15,218 04/007
Gila County PM-10 (1987) Gila County (part): Payson, AZ
          94 95 96 97 98 99 00 01                                                                                                                   
08/26/2002 Moderate Part 5,333 04/007
Gila County Sulfur Dioxide (1971) Miami (Gila County), AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06                                                                                          
03/26/2007   Part 1,514 04/007
Gila County Sulfur Dioxide (2010) Hayden, AZ
                                                                                                         13 14 15 16 17 18 19 20 21 22 23 24
/ /   Part 1,284 04/007
Gila County Sulfur Dioxide (2010) Miami, AZ
                                                                                                         13 14 15 16 17 18 19 20 21 22 23 24
/ /   Part 14,995 04/007
Greenlee County Sulfur Dioxide (1971) Morenci (Greenlee County), AZ
92 93 94 95 96 97 98 99 00 01 02 03                                                                                                         
06/25/2004   Part 8,437 04/011
Maricopa County 1-Hour Ozone (1979)-NAAQS revoked Phoenix, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
06/14/2005 Serious Part 3,763,324 04/013
Maricopa County 8-Hour Ozone (1997)-NAAQS revoked Phoenix-Mesa, AZ
                                                            04 05 06 07 08 09 10 11 12 13                                                       
10/17/2014 Marginal Part 3,801,700 04/013
Maricopa County 8-Hour Ozone (2008) Phoenix-Mesa, AZ
                                                                                                    12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 3,802,415 04/013
Maricopa County 8-Hour Ozone (2015) Phoenix-Mesa, AZ
                                                                                                                                  18 19 20 21 22 23 24
/ / Moderate Part 3,802,075 04/013
Maricopa County Carbon Monoxide (1971) Phoenix, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
04/08/2005 Serious Part 3,763,324 04/013
Maricopa County PM-10 (1987) Maricopa and Pinal Counties; Phoenix planning area, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Serious Part 3,817,145 04/013
Mohave County PM-10 (1987) Mohave County (part); Bullhead City, AZ
          94 95 96 97 98 99 00 01                                                                                                                   
08/26/2002 Moderate Part 10,710 04/015
Pima County Carbon Monoxide (1971) Tucson, AZ
92 93 94 95 96 97 98 99                                                                                                                             
07/10/2000 Not Classified Part 595,314 04/019
Pima County PM-10 (1987) Pima County; Ajo planning area, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19                         
09/03/2020 Moderate Part 8,823 04/019
Pima County PM-10 (1987) Pima County; Rillito planning area, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 588 04/019
Pima County Sulfur Dioxide (1971) Ajo (Pima County), AZ
92 93 94 95 96 97 98 99 00 01 02 03                                                                                                         
01/02/2004   Part 8,823 04/019
Pinal County 8-Hour Ozone (1997)-NAAQS revoked Phoenix-Mesa, AZ
                                                            04 05 06 07 08 09 10 11 12 13                                                       
10/17/2014 Marginal Part 46,927 04/021
Pinal County 8-Hour Ozone (2008) Phoenix-Mesa, AZ
                                                                                                    12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 47,212 04/021
Pinal County 8-Hour Ozone (2015) Phoenix-Mesa, AZ
                                                                                                                                  18 19 20 21 22 23 24
/ / Moderate Part 143,009 04/021
Pinal County Lead (2008) Hayden, AZ
                                                                                                              14 15 16 17 18 19 20 21 22 23 24
/ /   Part 3,346 04/021
Pinal County PM-10 (1987) Hayden, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 9,461 04/021
Pinal County PM-10 (1987) Miami, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 0 04/021
Pinal County PM-10 (1987) Maricopa and Pinal Counties; Phoenix planning area, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Serious Part 35,840 04/021
Pinal County PM-10 (1987) Pinal County (part); West Pinal, AZ
                                                                                                    12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Serious Part 283,032 04/021
Pinal County PM-2.5 (2006) West Central Pinal, AZ
                                                                                               11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 52,314 04/021
Pinal County Sulfur Dioxide (1971) Hayden (Pinal County), AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ /   Part 4,844 04/021
Pinal County Sulfur Dioxide (1971) San Manual (Pinal County), AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07                                                                                     
03/18/2008   Part 16,158 04/021
Pinal County Sulfur Dioxide (2010) Hayden, AZ
                                                                                                         13 14 15 16 17 18 19 20 21 22 23 24
/ /   Part 3,346 04/021
Santa Cruz County PM-10 (1987) Santa Cruz County; Nogales planning area, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 30,359 04/023
Santa Cruz County PM-2.5 (2006) Nogales, AZ
                                                                                     09 10 11 12 13 14 15 16 17 18 19 20 21               
09/14/2022 Moderate Part 30,622 04/023
Yuma County 8-Hour Ozone (2015) Yuma, AZ
                                                                                                                                  18 19 20 21 22 23 24
/ / Marginal Part 87,254 04/027
Yuma County PM-10 (1987) Yuma, AZ
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/ / Moderate Part 100,710 04/027
Important Notes

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