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Counties with the Cleanest Air in Minnesota

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

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

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 Cleanest Air in Minnesota”, https://gismap.land/rankings/minnesota/cleanest-air-counties. Figures from EPA Air Quality Index annual summary (2024).

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