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

Data is current as of October 31, 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 The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.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
MINNESOTA
Anoka County	Carbon Monoxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96 97 98	11/29/1999	Moderate <= 12.7ppm	Whole	330,844	27/003
Anoka County	Sulfur Dioxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96	07/14/1997		Whole	330,844	27/003
Carver County	Carbon Monoxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96 97 98	11/29/1999	Moderate <= 12.7ppm	Part	77,969	27/019
Carver County	Sulfur Dioxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96	07/14/1997		Whole	91,042	27/019
Dakota County	Carbon Monoxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96 97 98	11/29/1999	Moderate <= 12.7ppm	Part	380,675	27/037
Dakota County	Lead (1978)	Dakota County, MN	92 93	12/19/1994		Part	318,833	27/037
Dakota County	Lead (2008)	Eagan, MN	10 11 12 13 14 15 16 17 18 19 20 21 22 23 24	/ /		Part	8,997	27/037
Dakota County	Sulfur Dioxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96	07/14/1997		Whole	398,552	27/037
Hennepin County	Carbon Monoxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96 97 98	11/29/1999	Moderate <= 12.7ppm	Whole	1,152,425	27/053
Hennepin County	Sulfur Dioxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96	07/14/1997		Whole	1,152,425	27/053
Olmsted County	PM-10 (1987)	Olmsted County, MN	92 93 94	07/31/1995	Moderate	Part	96,199	27/109
Olmsted County	Sulfur Dioxide (1971)	Olmsted County; City of Rochester, MN	92 93 94 95 96 97 98 99 00	05/08/2001		Part	106,769	27/109
Ramsey County	Carbon Monoxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96 97 98	11/29/1999	Moderate <= 12.7ppm	Whole	508,640	27/123
Ramsey County	PM-10 (1987)	Ramsey County, MN	92 93 94 95 96 97 98 99 00 01	09/24/2002	Moderate	Part	284,783	27/123
Ramsey County	Sulfur Dioxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96	07/14/1997		Whole	508,640	27/123
Scott County	Carbon Monoxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96 97 98	11/29/1999	Moderate <= 12.7ppm	Part	119,772	27/139
Scott County	Sulfur Dioxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96	07/14/1997		Whole	129,928	27/139
St. Louis County	Carbon Monoxide (1971)	Duluth, MN	92 93	06/13/1994	Moderate <= 12.7ppm	Part	85,857	27/137
Washington County	Carbon Monoxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96 97 98	11/29/1999	Moderate <= 12.7ppm	Part	236,399	27/163
Washington County	Sulfur Dioxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96	07/14/1997		Whole	238,136	27/163
Wright County	Carbon Monoxide (1971)	Minneapolis-St. Paul, MN	92 93 94 95 96 97 98	11/29/1999	Moderate <= 12.7ppm	Part	113,454	27/171

Important Notes

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