RANKABLE EPA COUNTY AQI
Horry Air Quality - South Carolina
EPA county-level evidence, NDS comparative intelligence, and 19 connected ZIP profiles.
Median AQI
41.0
Maximum AQI
170.0
Good-air-quality days
79.85%
Average PM2.5
8.048 ug/m3
NDS Air Quality Score
32.65
U.S. County Rank
799 of 1,049
Percentile
23.66
Grade
D
County status
Horry 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.