RANKABLE EPA COUNTY AQI
Butler Air Quality - Ohio
EPA county-level evidence, NDS comparative intelligence, and 26 connected ZIP profiles.
Median AQI
55.0
Maximum AQI
151.0
Good-air-quality days
33.33%
Average PM2.5
9.853 ug/m3
NDS Air Quality Score
3.73
U.S. County Rank
1,044 of 1,049
Percentile
0.29
Grade
F
County status
Butler is part of the governed NDS rankable EPA county universe.
Connected ZIP codes
Methodology
EPA AQI evidence used here is county-derived. ZIP profiles connect to this evidence through the governed NDS geography relationship.