RANKABLE EPA COUNTY AQI
Linn Air Quality - Iowa
EPA county-level evidence, NDS comparative intelligence, and 18 connected ZIP profiles.
Median AQI
44.0
Maximum AQI
163.0
Good-air-quality days
61.18%
Average PM2.5
8.493 ug/m3
NDS Air Quality Score
28.08
U.S. County Rank
852 of 1,049
Percentile
18.61
Grade
F
County status
Linn 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.