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>National Area and County-Level Multi-Pollutant Information >Wyoming Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants
Wyoming Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants
Data is current as of October 31, 2024Listed 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 The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.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) 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 | |||||||||||||||||||||||||||||||||
WYOMING | |||||||||||||||||||||||||||||||||||||||||
Lincoln County | 8-Hour Ozone (2008) | Upper Green River Basin Area, WY |
| / / | Marginal | Part | 799 | 56/023 | |||||||||||||||||||||||||||||||||
Sheridan County | PM-10 (1987) | Sheridan County; City of Sheridan, WY |
| 05/04/2018 | Moderate | Part | 17,300 | 56/033 | |||||||||||||||||||||||||||||||||
Sublette County | 8-Hour Ozone (2008) | Upper Green River Basin Area, WY |
| / / | Marginal | Whole | 10,247 | 56/035 | |||||||||||||||||||||||||||||||||
Sweetwater County | 8-Hour Ozone (2008) | Upper Green River Basin Area, WY |
| / / | Marginal | Part | 452 | 56/037 |
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