RANKABLE EPA COUNTY AQI
Polk Air Quality - Florida
EPA county-level evidence, NDS comparative intelligence, and 45 connected ZIP profiles.
Median AQI
34.0
Maximum AQI
100.0
Good-air-quality days
94.40%
Average PM2.5
7.886 ug/m3
NDS Air Quality Score
70.84
U.S. County Rank
227 of 1,049
Percentile
78.34
Grade
B
County status
Polk 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.