RANKABLE EPA COUNTY AQI
Marathon Air Quality - Wisconsin
EPA county-level evidence, NDS comparative intelligence, and 22 connected ZIP profiles.
Median AQI
36.0
Maximum AQI
113.0
Good-air-quality days
80.00%
Average PM2.5
6.233 ug/m3
NDS Air Quality Score
55.59
U.S. County Rank
484 of 1,049
Percentile
53.72
Grade
C
County status
Marathon 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.