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RankingsMinnesotaWorst air quality

Counties with the Worst Air Quality in Minnesota

The top 22 of 22 Minnesota counties on GIS Map, ranked by median Air Quality Index, counting only counties that host an EPA air monitor.

#CountyMedian AQI
1Olmsted County
44
2Blue Earth County
43
3Hennepin County
42
4Scott County
42
5Anoka County
41
6Wright County
41
7Lyon County
40
8St. Louis County
39
9Stearns County
39
10Crow Wing County
38
11Dakota County
38
12Goodhue County
38
13Becker County
36
14Beltrami County
36
15Mille Lacs County
36
16Ramsey County
36
17Washington County
35
18Carlton County
34
19Lake County
32
20Cass County
27
21Winona County
20
22Cook County
16

Source: EPA Air Quality Index annual summary (2024). All counties with data are ranked. Estimates carry margins of error.

Citing this page: GIS Map, “Counties with the Worst Air Quality in Minnesota”, https://gismap.land/rankings/minnesota/worst-air-quality-counties. Figures from EPA Air Quality Index annual summary (2024).

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