RANKABLE EPA COUNTY AQI
New Castle Air Quality - Delaware
EPA county-level evidence, NDS comparative intelligence, and 42 connected ZIP profiles.
Median AQI
46.0
Maximum AQI
161.0
Good-air-quality days
60.44%
Average PM2.5
7.263 ug/m3
NDS Air Quality Score
30.17
U.S. County Rank
829 of 1,049
Percentile
20.80
Grade
D
County status
New Castle 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.