RANKABLE EPA COUNTY AQI
Hamilton Air Quality - Illinois
EPA county-level evidence, NDS comparative intelligence, and 8 connected ZIP profiles.
Median AQI
43.0
Maximum AQI
98.0
Good-air-quality days
66.54%
Average PM2.5
7.726 ug/m3
NDS Air Quality Score
34.69
U.S. County Rank
778 of 1,049
Percentile
25.67
Grade
D
County status
Hamilton is part of the governed NDS rankable EPA county universe.
Methodology
EPA AQI evidence used here is county-derived. ZIP profiles connect to this evidence through the governed NDS geography relationship.