RANKABLE EPA COUNTY AQI
Washington Air Quality - Utah
EPA county-level evidence, NDS comparative intelligence, and 20 connected ZIP profiles.
Median AQI
45.0
Maximum AQI
97.0
Good-air-quality days
71.05%
Average PM2.5
4.992 ug/m3
NDS Air Quality Score
39.87
U.S. County Rank
707 of 1,049
Percentile
32.44
Grade
D
County status
Washington 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.