RANKABLE EPA COUNTY AQI
Madison Air Quality - Virginia
EPA county-level evidence, NDS comparative intelligence, and 18 connected ZIP profiles.
Median AQI
41.0
Maximum AQI
87.0
Good-air-quality days
82.77%
Average PM2.5
5.906 ug/m3
NDS Air Quality Score
57.20
U.S. County Rank
454 of 1,049
Percentile
56.58
Grade
C
County status
Madison 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.