RANKABLE EPA COUNTY AQI
Carroll Air Quality - Maryland
EPA county-level evidence, NDS comparative intelligence, and 10 connected ZIP profiles.
Median AQI
38.0
Maximum AQI
90.0
Good-air-quality days
90.34%
Average PM2.5
N/A
NDS Air Quality Score
70.21
U.S. County Rank
245 of 1,049
Percentile
76.62
Grade
B
County status
Carroll 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.