RANKABLE EPA COUNTY AQI
Air Quality in ZIP 37424 - Chattanooga, Tennessee
County-derived EPA air-quality evidence connected locally through National Data System.
Median AQI
45.0
Maximum AQI
141.0
Good-air-quality days
64.09%
Average PM2.5
8.426 ug/m3
NDS Air Quality Score
26.42
U.S. County Rank
875 of 1,049
Percentile
16.41
Grade
F
What the data means
ZIP 37424 is connected to governed EPA county-level air-quality evidence for Hamilton.
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.