RANKABLE EPA COUNTY AQI
Mercer Air Quality - North Dakota
EPA county-level evidence, NDS comparative intelligence, and 6 connected ZIP profiles.
Median AQI
39.0
Maximum AQI
283.0
Good-air-quality days
80.25%
Average PM2.5
8.614 ug/m3
NDS Air Quality Score
35.04
U.S. County Rank
770 of 1,049
Percentile
26.43
Grade
D
County status
Mercer 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.