RANKABLE EPA COUNTY AQI
Brown Air Quality - Indiana
EPA county-level evidence, NDS comparative intelligence, and 7 connected ZIP profiles.
Median AQI
37.0
Maximum AQI
77.0
Good-air-quality days
94.49%
Average PM2.5
N/A
NDS Air Quality Score
72.92
U.S. County Rank
195 of 1,049
Percentile
81.39
Grade
B
County status
Brown 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.