RANKABLE EPA COUNTY AQI
Knox Air Quality - Indiana
EPA county-level evidence, NDS comparative intelligence, and 11 connected ZIP profiles.
Median AQI
38.0
Maximum AQI
93.0
Good-air-quality days
93.07%
Average PM2.5
N/A
NDS Air Quality Score
64.57
U.S. County Rank
333 of 1,049
Percentile
68.23
Grade
C
County status
Knox 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.