RANKABLE EPA COUNTY AQI
Penobscot Air Quality - Maine
EPA county-level evidence, NDS comparative intelligence, and 43 connected ZIP profiles.
Median AQI
34.0
Maximum AQI
115.0
Good-air-quality days
86.14%
Average PM2.5
5.476 ug/m3
NDS Air Quality Score
70.96
U.S. County Rank
225 of 1,049
Percentile
78.53
Grade
B
County status
Penobscot 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.