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RankingsKentuckyWorst air quality

Counties with the Worst Air Quality in Kentucky

The top 25 of 25 Kentucky counties on GIS Map, ranked by median Air Quality Index, counting only counties that host an EPA air monitor.

#CountyMedian AQI
1Jefferson County
50
2Bell County
44
3Hancock County
44
4Boone County
43
5Bullitt County
43
6Jessamine County
43
7Oldham County
43
8Simpson County
43
9Boyd County
42
10Christian County
42
11Livingston County
42
12McCracken County
42
13Fayette County
41
14Hardin County
41
15Pulaski County
41
16Campbell County
40
17Greenup County
40
18Perry County
40
19Warren County
39
20Washington County
39
21Edmonson County
38
22Morgan County
38
23Pike County
38
24Carter County
37
25Daviess County
37

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 Kentucky”, https://gismap.land/rankings/kentucky/worst-air-quality-counties. Figures from EPA Air Quality Index annual summary (2024).

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