RANKABLE EPA COUNTY AQI
Washington Air Quality - Minnesota
EPA county-level evidence, NDS comparative intelligence, and 13 connected ZIP profiles.
Median AQI
37.0
Maximum AQI
84.0
Good-air-quality days
90.91%
Average PM2.5
9.993 ug/m3
NDS Air Quality Score
59.68
U.S. County Rank
409 of 1,049
Percentile
60.97
Grade
C
County status
Washington 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.