RANKABLE EPA COUNTY AQI
Durham Air Quality - North Carolina
EPA county-level evidence, NDS comparative intelligence, and 20 connected ZIP profiles.
Median AQI
43.0
Maximum AQI
77.0
Good-air-quality days
71.06%
Average PM2.5
7.324 ug/m3
NDS Air Quality Score
49.86
U.S. County Rank
571 of 1,049
Percentile
45.42
Grade
C
County status
Durham 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.