RANKABLE EPA COUNTY AQI
Spokane Air Quality - Washington
EPA county-level evidence, NDS comparative intelligence, and 50 connected ZIP profiles.
Median AQI
42.0
Maximum AQI
71.0
Good-air-quality days
70.78%
Average PM2.5
5.996 ug/m3
NDS Air Quality Score
51.65
U.S. County Rank
547 of 1,049
Percentile
47.71
Grade
C
County status
Spokane 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.