RANKABLE EPA COUNTY AQI
Hillsborough Air Quality - New Hampshire
EPA county-level evidence, NDS comparative intelligence, and 40 connected ZIP profiles.
Median AQI
38.0
Maximum AQI
123.0
Good-air-quality days
82.48%
Average PM2.5
5.414 ug/m3
NDS Air Quality Score
55.55
U.S. County Rank
485 of 1,049
Percentile
53.63
Grade
C
County status
Hillsborough 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.