RANKABLE EPA COUNTY AQI
Washtenaw Air Quality - Michigan
EPA county-level evidence, NDS comparative intelligence, and 16 connected ZIP profiles.
Median AQI
41.0
Maximum AQI
152.0
Good-air-quality days
76.01%
Average PM2.5
7.291 ug/m3
NDS Air Quality Score
45.04
U.S. County Rank
637 of 1,049
Percentile
39.12
Grade
D
County status
Washtenaw 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.