RANKABLE EPA COUNTY AQI
Madison Air Quality - Indiana
EPA county-level evidence, NDS comparative intelligence, and 8 connected ZIP profiles.
Median AQI
42.0
Maximum AQI
122.0
Good-air-quality days
71.06%
Average PM2.5
7.637 ug/m3
NDS Air Quality Score
40.22
U.S. County Rank
702 of 1,049
Percentile
32.92
Grade
D
County status
Madison is part of the governed NDS rankable EPA county universe.
Methodology
EPA AQI evidence used here is county-derived. ZIP profiles connect to this evidence through the governed NDS geography relationship.