RANKABLE EPA COUNTY AQI
Shasta Air Quality - California
EPA county-level evidence, NDS comparative intelligence, and 32 connected ZIP profiles.
Median AQI
44.0
Maximum AQI
100.0
Good-air-quality days
84.91%
Average PM2.5
4.978 ug/m3
NDS Air Quality Score
50.96
U.S. County Rank
554 of 1,049
Percentile
47.04
Grade
C
County status
Shasta 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.