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

Data is current as of November 30, 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 The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.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
RHODE ISLAND
Bristol County 1-Hour Ozone (1979)-NAAQS revoked Providence (all of RI), RI
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                         
/ / Serious Whole 49,875 44/001
Bristol County 8-Hour Ozone (1997)-NAAQS revoked Providence (all of RI), RI
                                                            04 05 06 07 08 09 10 11 12 13 14                                                       
/ / Moderate Whole 49,875 44/001
Kent County 1-Hour Ozone (1979)-NAAQS revoked Providence (all of RI), RI
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                         
/ / Serious Whole 166,158 44/003
Kent County 8-Hour Ozone (1997)-NAAQS revoked Providence (all of RI), RI
                                                            04 05 06 07 08 09 10 11 12 13 14                                                       
/ / Moderate Whole 166,158 44/003
Newport County 1-Hour Ozone (1979)-NAAQS revoked Providence (all of RI), RI
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                         
/ / Serious Whole 82,888 44/005
Newport County 8-Hour Ozone (1997)-NAAQS revoked Providence (all of RI), RI
                                                            04 05 06 07 08 09 10 11 12 13 14                                                       
/ / Moderate Whole 82,888 44/005
Providence County 1-Hour Ozone (1979)-NAAQS revoked Providence (all of RI), RI
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                         
/ / Serious Whole 626,667 44/007
Providence County 8-Hour Ozone (1997)-NAAQS revoked Providence (all of RI), RI
                                                            04 05 06 07 08 09 10 11 12 13 14                                                       
/ / Moderate Whole 626,667 44/007
Washington County 1-Hour Ozone (1979)-NAAQS revoked Providence (all of RI), RI
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                         
/ / Serious Whole 126,979 44/009
Washington County 8-Hour Ozone (1997)-NAAQS revoked Providence (all of RI), RI
                                                            04 05 06 07 08 09 10 11 12 13 14                                                       
/ / Moderate Whole 126,979 44/009
Important Notes

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