RANKABLE EPA COUNTY AQI
Air Quality in ZIP 57049 - North Sioux City, South Dakota
County-derived EPA air-quality evidence connected locally through National Data System.
Median AQI
44.0
Maximum AQI
167.0
Good-air-quality days
65.57%
Average PM2.5
5.857 ug/m3
NDS Air Quality Score
28.60
U.S. County Rank
845 of 1,049
Percentile
19.27
Grade
F
What the data means
ZIP 57049 is connected to governed EPA county-level air-quality evidence for Union.
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.