RANKABLE EPA COUNTY AQI
Mercer Air Quality - Pennsylvania
EPA county-level evidence, NDS comparative intelligence, and 17 connected ZIP profiles.
Median AQI
41.0
Maximum AQI
115.0
Good-air-quality days
77.78%
Average PM2.5
7.175 ug/m3
NDS Air Quality Score
51.23
U.S. County Rank
550 of 1,049
Percentile
47.42
Grade
C
County status
Mercer 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.