RANKABLE EPA COUNTY AQI
Dorchester Air Quality - Maryland
EPA county-level evidence, NDS comparative intelligence, and 15 connected ZIP profiles.
Median AQI
40.0
Maximum AQI
84.0
Good-air-quality days
84.44%
Average PM2.5
5.712 ug/m3
NDS Air Quality Score
66.40
U.S. County Rank
304 of 1,049
Percentile
70.99
Grade
B
County status
Dorchester 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.