RANKABLE EPA COUNTY AQI
Union Air Quality - Oregon
EPA county-level evidence, NDS comparative intelligence, and 5 connected ZIP profiles.
Median AQI
22.0
Maximum AQI
70.0
Good-air-quality days
92.82%
Average PM2.5
N/A
NDS Air Quality Score
84.23
U.S. County Rank
88 of 1,049
Percentile
91.70
Grade
A
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.