Counties with the Worst Air Quality in North Dakota
The top 9 of 9 North Dakota counties on GIS Map, ranked by median Air Quality Index, counting only counties that host an EPA air monitor.
| # | County | Median AQI |
|---|---|---|
| 1 | Burleigh County | 39 |
| 2 | McKenzie County | 39 |
| 3 | Billings County | 38 |
| 4 | Burke County | 38 |
| 5 | Cass County | 38 |
| 6 | Oliver County | 38 |
| 7 | Dunn County | 37 |
| 8 | Mercer County | 37 |
| 9 | Ward 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 North Dakota”, https://gismap.land/rankings/north-dakota/worst-air-quality-counties. Figures from EPA Air Quality Index annual summary (2024).
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