RANKABLE EPA COUNTY AQI
Air Quality in ZIP 61101 - Rockford, Illinois
County-derived EPA air-quality evidence connected locally through National Data System.
Median AQI
41.0
Maximum AQI
169.0
Good-air-quality days
67.68%
Average PM2.5
8.983 ug/m3
NDS Air Quality Score
25.75
U.S. County Rank
883 of 1,049
Percentile
15.65
Grade
F
What the data means
ZIP 61101 is connected to governed EPA county-level air-quality evidence for Winnebago.
ZIP ranking note: ZIPs are not separately ranked. The rank shown on this page is the associated county rank because the EPA AQI evidence used here is county-derived.
County context
Methodology
EPA AQI evidence is county-derived. NDS connects that evidence to ZIP geography where a governed county relationship exists. NDS does not claim that EPA directly ranks ZIP codes.