RANKABLE EPA COUNTY AQI
St. Louis Air Quality - Minnesota
EPA county-level evidence, NDS comparative intelligence, and 37 connected ZIP profiles.
Median AQI
38.0
Maximum AQI
108.0
Good-air-quality days
90.58%
Average PM2.5
4.820 ug/m3
NDS Air Quality Score
62.60
U.S. County Rank
357 of 1,049
Percentile
65.94
Grade
C
County status
St. Louis 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.