null
Search County:
Search Site:
.png)
.png)
| County | Site | Units | Max | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bannock | Pocatello | µg/m³ | 7.6 | 7.4 | 7.5 | 7.3 | 7.3 | 7.5 | 7.6 | 7.5 | 7.2 | 7 | 6.9 | 6.7 | 6.5 | 6.3 | 6 | 6 | 6 | 5.9 | 5.5 | 5.1 | 4.5 | 4.2 | 3.8 | 3.2 | 2.9 |
| Boise | Idaho City | µg/m³ | 15.7 | 15.7 | 15.5 | 15.2 | 15.2 | 15.1 | 14.9 | 14.4 | 13.9 | 13.4 | 12.8 | 12.8 | 12.5 | 12.5 | 12.4 | 12.9 | 13 | 13 | 12.9 | 12.6 | 12.4 | 12 | 12 | 11.5 | 11.1 |
| Bonner | Sandpoint | µg/m³ | 8.5 | 4.8 | 5 | 5.2 | 5.5 | 5.7 | 6.1 | 6.3 | 6.3 | 6.4 | 6.7 | 6.9 | 6.9 | 7.1 | 7.4 | 7.8 | 8 | 8.2 | 8.2 | 8.3 | 8.4 | 8.4 | 8.5 | 8.5 | 8.5 |
| Bonneville | Idaho Falls | µg/m³ | 5.9 | 5.9 | 5.8 | 5.7 | 5.7 | 5.7 | 5.4 | 5.4 | 5.3 | 5.1 | 5 | 5 | 5 | 5 | 5.1 | 4.9 | 4.7 | 4.5 | 4.3 | 4.4 | 4.6 | 4.7 | 4.8 | 5.1 | 5.2 |
| Boundary | Bonners Ferry | µg/m³ | 7.9 | 5.8 | 6 | 6.4 | 6.4 | 6.5 | 6.4 | 6.5 | 6.9 | 7.2 | 7.7 | 7.8 | 7.9 | 7.3 | 6 | 5.8 | 5.8 | 5.8 | 5.7 | 5 | 4.6 | 4.8 | 4.7 | 4.7 | 4.7 |
| Canyon | Nampa | µg/m³ | 57.4 | 57.4 | 57.4 | 56.6 | 55.3 | 53.7 | 52.1 | 50.5 | 49.5 | 48.3 | 47 | 46 | 45.1 | 43.5 | 42.2 | 40 | 37.7 | 35.4 | 33.5 | 32.7 | 31.3 | 29.7 | 27.9 | 25.9 | 24 |
| Kootenai | Coeur d'Alene | µg/m³ | 5.5 | 4.4 | 4.5 | 4.5 | 4.6 | 4.9 | 5.1 | 5 | 5 | 4.8 | 4.7 | 4.9 | 5 | 5.1 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5 | 5.1 | 5.2 | 5.3 | 5.4 | 5.5 |
| Lemhi | Salmon | µg/m³ | 27.7 | 27.7 | 26.8 | 26.4 | 26.1 | 25.6 | 24.9 | 24.5 | 23.1 | 22 | 22 | 21.8 | 21.9 | 22.5 | 23.2 | 23.7 | 23.8 | 23.8 | 23.6 | 24.6 | 25 | 25 | 24.9 | 24.5 | 25.6 |
| Lewis/Idaho | Kamiah - Nez Perce Tribe | µg/m³ | 22.5 | 21.7 | 21 | 20.8 | 20.8 | 21 | 20.5 | 20.1 | 19.6 | 19.2 | 18.9 | 19 | 19.2 | 19.1 | 18.9 | 18.8 | 18.8 | 19.4 | 19.7 | 19.8 | 20.1 | 21 | 21.5 | 21.9 | 22.5 |
| Nez Perce | Lewiston | µg/m³ | 26.7 | 13.5 | 13.3 | 14 | 14.5 | 15 | 15.5 | 16 | 16.4 | 16.7 | 17.2 | 17.6 | 17.8 | 18.4 | 19 | 19.5 | 20 | 20.7 | 21.6 | 22.3 | 23.5 | 24.3 | 24.7 | 25.6 | 26.7 |
| Shoshone | Pinehurst | µg/m³ | 17.2 | 8.5 | 8.9 | 9.5 | 9.8 | 10.1 | 10.7 | 10.9 | 11.2 | 11.5 | 12.2 | 12.1 | 12 | 12 | 12.1 | 12.2 | 12.2 | 12.4 | 12.7 | 13.3 | 13.7 | 14.4 | 15.2 | 16.4 | 17.2 |
| Twin Falls | Twin Falls | µg/m³ | 3.9 | 3.9 | 3.8 | 3.5 | 3.3 | 3.2 | 3.2 | 3.1 | 3.1 | 3 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.7 | 2.7 | 2.6 | 2.5 | 2.6 | 2.8 | 3.1 | 3.2 | 3.2 |
