RANKABLE EPA COUNTY AQI
Delaware Air Quality - Pennsylvania
EPA county-level evidence, NDS comparative intelligence, and 42 connected ZIP profiles.
Median AQI
44.0
Maximum AQI
153.0
Good-air-quality days
65.57%
Average PM2.5
8.062 ug/m3
NDS Air Quality Score
34.85
U.S. County Rank
775 of 1,049
Percentile
25.95
Grade
D
County status
Delaware 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.