Counties with the Worst Air Quality in South Carolina
The top 13 of 13 South Carolina counties on GIS Map, ranked by median Air Quality Index, counting only counties that host an EPA air monitor.
| # | County | Median AQI |
|---|---|---|
| 1 | Spartanburg County | 49 |
| 2 | Greenville County | 48 |
| 3 | Richland County | 47 |
| 4 | York County | 46 |
| 5 | Chesterfield County | 44 |
| 6 | Edgefield County | 44 |
| 7 | Florence County | 44 |
| 8 | Anderson County | 43 |
| 9 | Charleston County | 43 |
| 10 | Darlington County | 40 |
| 11 | Horry County | 40 |
| 12 | Aiken County | 39 |
| 13 | Berkeley County | 37 |
Source: EPA Air Quality Index annual summary (2024). All counties with data are ranked. Estimates carry margins of error.
Citing this page: GIS Map, “Counties with the Worst Air Quality in South Carolina”, https://gismap.land/rankings/south-carolina/worst-air-quality-counties. Figures from EPA Air Quality Index annual summary (2024).
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