GIS Map
RankingsArizonaCleanest air

Counties with the Cleanest Air in Arizona

The top 13 of 13 Arizona counties on GIS Map, ranked by lowest median Air Quality Index, counting only counties that host an EPA air monitor.

#CountyMedian AQI
1Navajo County
13
2Apache County
14
3Mohave County
19
4Santa Cruz County
43
5Coconino County
46
6La Paz County
47
7Yavapai County
47
8Yuma County
47
9Cochise County
48
10Gila County
50
11Pima County
56
12Maricopa County
77
13Pinal County
77

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

More Arizona rankings

Richest citiesMost expensive homesMost affordable homesHighest rentMost educatedHighest poverty rateMost densely populatedLargest by populationYoungestOldest by median ageFastest-growingFastest-shrinkingFastest-growing since 2010WarmestColdestSnowiestWettestDriestHighest hazard risk countiesLowest hazard risk countiesHighest expected lossesHighest radon potentialWorst air qualityWorst drought