RANKABLE EPA COUNTY AQI
Franklin Air Quality - Maine
EPA county-level evidence, NDS comparative intelligence, and 21 connected ZIP profiles.
Median AQI
27.0
Maximum AQI
75.0
Good-air-quality days
83.47%
Average PM2.5
5.382 ug/m3
NDS Air Quality Score
67.52
U.S. County Rank
284 of 1,049
Percentile
72.90
Grade
B
County status
Franklin 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.