RANKABLE EPA COUNTY AQI
Imperial Air Quality - California
EPA county-level evidence, NDS comparative intelligence, and 19 connected ZIP profiles.
Median AQI
64.0
Maximum AQI
190.0
Good-air-quality days
27.40%
Average PM2.5
6.952 ug/m3
NDS Air Quality Score
15.79
U.S. County Rank
988 of 1,049
Percentile
5.63
Grade
F
County status
Imperial is part of the governed NDS rankable EPA county universe.
Connected ZIP codes
Methodology
EPA AQI evidence used here is county-derived. ZIP profiles connect to this evidence through the governed NDS geography relationship.