RANKABLE EPA COUNTY AQI
Lake Air Quality - Illinois
EPA county-level evidence, NDS comparative intelligence, and 33 connected ZIP profiles.
Median AQI
40.0
Maximum AQI
108.0
Good-air-quality days
83.50%
Average PM2.5
N/A
NDS Air Quality Score
46.21
U.S. County Rank
620 of 1,049
Percentile
40.74
Grade
C
County status
Lake 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.