RANKABLE EPA COUNTY AQI
Baltimore Air Quality - Maryland
EPA county-level evidence, NDS comparative intelligence, and 21 connected ZIP profiles.
Median AQI
44.0
Maximum AQI
136.0
Good-air-quality days
68.65%
Average PM2.5
7.834 ug/m3
NDS Air Quality Score
36.07
U.S. County Rank
752 of 1,049
Percentile
28.15
Grade
D
County status
Baltimore 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.