RANKABLE EPA COUNTY AQI
Air Quality in ZIP 56484 - Walker, Minnesota
County-derived EPA air-quality evidence connected locally through National Data System.
Median AQI
22.0
Maximum AQI
55.0
Good-air-quality days
94.44%
Average PM2.5
4.591 ug/m3
NDS Air Quality Score
89.67
U.S. County Rank
46 of 1,049
Percentile
95.71
Grade
A+
What the data means
ZIP 56484 is connected to governed EPA county-level air-quality evidence for Cass.
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.