RANKABLE EPA COUNTY AQI
Johnson Air Quality - Wyoming
EPA county-level evidence, NDS comparative intelligence, and 6 connected ZIP profiles.
Median AQI
42.0
Maximum AQI
84.0
Good-air-quality days
90.56%
Average PM2.5
N/A
NDS Air Quality Score
56.19
U.S. County Rank
470 of 1,049
Percentile
55.06
Grade
C
County status
Johnson 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.