RANKABLE EPA COUNTY AQI
Big Horn Air Quality - Wyoming
EPA county-level evidence, NDS comparative intelligence, and 16 connected ZIP profiles.
Median AQI
39.0
Maximum AQI
119.0
Good-air-quality days
89.24%
Average PM2.5
N/A
NDS Air Quality Score
53.95
U.S. County Rank
501 of 1,049
Percentile
52.10
Grade
C
County status
Big Horn 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.