RANKABLE EPA COUNTY AQI
Placer Air Quality - California
EPA county-level evidence, NDS comparative intelligence, and 29 connected ZIP profiles.
Median AQI
51.0
Maximum AQI
143.0
Good-air-quality days
48.56%
Average PM2.5
6.556 ug/m3
NDS Air Quality Score
20.76
U.S. County Rank
943 of 1,049
Percentile
9.92
Grade
F
County status
Placer 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.