RANKABLE EPA COUNTY AQI
Clark Air Quality - Ohio
EPA county-level evidence, NDS comparative intelligence, and 19 connected ZIP profiles.
Median AQI
46.0
Maximum AQI
126.0
Good-air-quality days
59.41%
Average PM2.5
8.651 ug/m3
NDS Air Quality Score
24.96
U.S. County Rank
898 of 1,049
Percentile
14.22
Grade
F
County status
Clark 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.