RANKABLE EPA COUNTY AQI
Norfolk Air Quality - Virginia
EPA county-level evidence, NDS comparative intelligence, and 20 connected ZIP profiles.
Median AQI
33.0
Maximum AQI
94.0
Good-air-quality days
84.67%
Average PM2.5
6.569 ug/m3
NDS Air Quality Score
58.76
U.S. County Rank
432 of 1,049
Percentile
58.78
Grade
C
County status
Norfolk 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.