GIS Map
RankingsUtahCleanest air

Counties with the Cleanest Air in Utah

The top 17 of 17 Utah counties on GIS Map, ranked by lowest median Air Quality Index, counting only counties that host an EPA air monitor.

#CountyMedian AQI
1Garfield County
9
2Wayne County
11
3Wasatch County
37
4Iron County
43
5Cache County
44
6Carbon County
44
7San Juan County
44
8Washington County
44
9Weber County
45
10Davis County
46
11Tooele County
46
12Box Elder County
47
13Duchesne County
47
14Utah County
47
15Grand County
48
16Uintah County
48
17Salt Lake County
54

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

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