RANKABLE EPA COUNTY AQI
Okanogan Air Quality - Washington
EPA county-level evidence, NDS comparative intelligence, and 16 connected ZIP profiles.
Median AQI
31.0
Maximum AQI
86.0
Good-air-quality days
74.79%
Average PM2.5
6.221 ug/m3
NDS Air Quality Score
68.50
U.S. County Rank
267 of 1,049
Percentile
74.52
Grade
B
County status
Okanogan 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.