RANKABLE EPA COUNTY AQI
Washington Air Quality - Rhode Island
EPA county-level evidence, NDS comparative intelligence, and 21 connected ZIP profiles.
Median AQI
42.0
Maximum AQI
129.0
Good-air-quality days
75.72%
Average PM2.5
6.192 ug/m3
NDS Air Quality Score
39.57
U.S. County Rank
714 of 1,049
Percentile
31.77
Grade
D
County status
Washington 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.