RANKABLE EPA COUNTY AQI
Whatcom Air Quality - Washington
EPA county-level evidence, NDS comparative intelligence, and 17 connected ZIP profiles.
Median AQI
30.0
Maximum AQI
58.0
Good-air-quality days
96.62%
Average PM2.5
4.626 ug/m3
NDS Air Quality Score
82.29
U.S. County Rank
103 of 1,049
Percentile
90.27
Grade
A
County status
Whatcom 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.