A total of 10 results found. Show Results on Map.
Rank | Air Quality Index ▼ | County / Population |
1. | 40.5 | Hillsborough, NH / 402,776 |
2. | 39.0 | Rockingham, NH / 297,702 |
3. | 38.7 | Strafford, NH / 124,387 |
4. | 38.6 | Carroll, NH / 47,623 |
4. | 38.6 | Cheshire, NH / 76,596 |
6. | 38.5 | Belknap, NH / 60,252 |
7. | 38.3 | Merrimack, NH / 146,880 |
8. | 38.0 | Sullivan, NH / 43,291 |
9. | 37.6 | Grafton, NH / 89,360 |
10. | 37.2 | Coos, NH / 32,202 |
Please note that we only rank locations with 'Air Quality Index' data. The rank above might not be a complete list. Locations without 'Air Quality Index' data are not listed.