| # | County | Median AQI |
|---|---|---|
| 1 | Thomas County | 12 |
| 2 | Scotts Bluff County | 16 |
| 3 | Cass County | 17 |
| 4 | Hall County | 32 |
| 5 | Washington County | 34 |
| 6 | Gage County | 35 |
| 7 | Knox County | 36 |
| 8 | Sarpy County | 37 |
| 9 | Lancaster County | 41 |
| 10 | Sioux County | 44 |
| 11 | Douglas County | 45 |
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 Cleanest Air in Nebraska”, https://gismap.land/rankings/nebraska/cleanest-air-counties. Figures from EPA Air Quality Index annual summary (2024).
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