RANKABLE EPA COUNTY AQI
Air Quality in ZIP 50056 - Colo, Iowa
County-derived EPA air-quality evidence connected locally through National Data System.
Median AQI
35.0
Maximum AQI
77.0
Good-air-quality days
93.40%
Average PM2.5
N/A
NDS Air Quality Score
74.34
U.S. County Rank
175 of 1,049
Percentile
83.30
Grade
B
What the data means
ZIP 50056 is connected to governed EPA county-level air-quality evidence for Story.
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.