RANKABLE EPA COUNTY AQI
Union Air Quality - North Carolina
EPA county-level evidence, NDS comparative intelligence, and 6 connected ZIP profiles.
Median AQI
41.0
Maximum AQI
90.0
Good-air-quality days
90.22%
Average PM2.5
N/A
NDS Air Quality Score
63.62
U.S. County Rank
346 of 1,049
Percentile
66.98
Grade
C
County status
Union is part of the governed NDS rankable EPA county universe.
Methodology
EPA AQI evidence used here is county-derived. ZIP profiles connect to this evidence through the governed NDS geography relationship.