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| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ada | Garden City | µg/m³ | 6.9 | 5.8 | 5.5 | 5.1 | 4.6 | 4.3 | 4.1 | 3.9 | 3.7 | 3.8 | 3.7 | 3.5 | 3.2 | 3.2 | 3.5 | 4 | 4.8 | 5.4 | 6 | 6.5 | 6.9 | ||||
| Ada | Meridian | µg/m³ | 10 | 10 | 9.4 | 8.7 | 8.3 | 7.6 | 7.1 | 6.4 | 6 | 5.7 | 5.6 | 5.2 | 5.1 | 5.1 | 5.6 | 6 | 6.5 | 6.8 | 7.4 | 8.5 | 9 | ||||
| Bannock | Pocatello | µg/m³ | 10.4 | 10.4 | 10.4 | 10.2 | 10.2 | 10.3 | 9.9 | 8.7 | 8.6 | 8.5 | 8.4 | 8.3 | 8.3 | 8.4 | 8.2 | 8.2 | 8.2 | 8.1 | 7.9 | 7.7 | 7.5 | ||||
| Benewah | Plummer - Coeur d'Alene Tribe | µg/m³ | 74.2 | 69.6 | 70.8 | 72.2 | 73.4 | 74.2 | 74 | 73.5 | 71.9 | 68.4 | 64.2 | 60.4 | 57.6 | 54.5 | 53.4 | 53.9 | 53.6 | 53.9 | 54.2 | 54.7 | 54.2 | ||||
| Benewah | St. Maries | µg/m³ | 66.7 | 62 | 63.2 | 64 | 64.3 | 65.1 | 65.8 | 66.4 | 66.7 | 65.4 | 60.3 | 56 | 53.1 | 51.4 | 51.5 | 52.3 | 52.4 | 51.7 | 50.7 | 50.5 | |||||
| Blaine | Ketchum | µg/m³ | 10.3 | 10.3 | 9.8 | 9.5 | 9.4 | 9 | 8.5 | 7.4 | 7 | 6.5 | 6.3 | 6 | 5.6 | 5.4 | 5.4 | 5.4 | 5.2 | 5.1 | 5.1 | 5.1 | 5 | ||||
| Boise | Garden Valley | µg/m³ | 12 | 12 | 11.5 | 11 | 10.5 | 10 | 9.7 | 9.3 | 8.9 | 8.4 | 7.9 | 7.6 | 7.5 | 7.2 | 6.9 | 6.7 | 6.5 | 6.3 | 6.2 | 5.9 | 5.7 | ||||
| Boise | Idaho City | µg/m³ | 9.5 | 9.5 | 9.1 | 8.5 | 8.1 | 7.5 | 6.8 | 6.5 | 6.1 | 5.7 | 5.4 | 5 | 4.6 | 4.5 | 4.6 | 4 | 4 | 4.1 | 4.3 | 4.5 | 4.6 | ||||
| Boise | Weiser | µg/m³ | 14.5 | 14.5 | 14.5 | 14.4 | 14.1 | 13.8 | 13.5 | 13.1 | 12.8 | 12.7 | 12.5 | 12.4 | 12.3 | 12.2 | 12 | 11.9 | 11.8 | 11.7 | 11.8 | 11.9 | 11.8 | ||||
| Bonner | Sandpoint | µg/m³ | 73 | 72.2 | 73 | 72.9 | 72.3 | 69.6 | 67.4 | 65 | 62 | 59.5 | 57.2 | 54.7 | 53.6 | 52.5 | 51.2 | 49.8 | 48.9 | 48.4 | 48.5 | 48.2 | |||||
| Bonneville | Idaho Falls | µg/m³ | 11.1 | 9.7 | 9.5 | 9.5 | 9.5 | 9.6 | 9.8 | 10 | 10.2 | 10.4 | 10.7 | 10.8 | 11 | 10.9 | 11.1 | 11.1 | 10.8 | 10.6 | 10.5 | 10.4 | 10.5 | ||||
| Boundary | Mt. Hall Elementary School | µg/m³ | 48.4 | 48.4 | 48.1 | 47.8 | 47.6 | 47.2 | 46.6 | 45.8 | 45.4 | 44.7 | 43.1 | 41.3 | 39.4 | 37.9 | 36.7 | 35.7 | 35 | 34.5 | 33.8 | 33.3 | |||||
| Boundary | Porthill | µg/m³ | 41.2 | 41.2 | 39.7 | 38.9 | 36.9 | 35 | 33.4 | 31.9 | 29.9 | 28.2 | 26.3 | 24.8 | 24.3 | 23.6 | 22.8 | 22.3 | 21.7 | 20.3 | 18 | 15.6 | |||||
| Caribou | Soda Springs | µg/m³ | 9.4 | 7 | 7 | 7 | 7 | 7 | 7.1 | 7 | 7.1 | 7.3 | 7.5 | 7.9 | 8.3 | 8.7 | 9 | 9.2 | 9.4 | ||||||||
| Franklin | Preston | µg/m³ | 4.6 | 4.2 | 4.1 | 4 | 3.9 | 3.8 | 3.7 | 3.7 | 3.6 | 3.5 | 3.2 | 3.3 | 3.5 | 3.8 | 4 | 4.2 | 4.3 | 4.3 | 4.2 | 4.4 | 4.6 | ||||
| Idaho | Grangeville | µg/m³ | 43.4 | 43.4 | 42.1 | 40.5 | 38.7 | 36.5 | 33.7 | 31.9 | 30.2 | 28.5 | 26.8 | 24.9 | 23.5 | 22.3 | 20.3 | 18.7 | 16.8 | 15 | 13.4 | 12.5 | |||||
| Kootenai | Coeur d'Alene | µg/m³ | 56.2 | 55.5 | 55.8 | 56.2 | |||||||||||||||||||||
| Latah | Moscow | µg/m³ | 48.6 | 47.5 | 48.4 | 48.6 | 48.5 | 48.3 | 47.8 | 47.2 | 45 | 42.2 | 40.2 | 38.3 | 37 | 36.8 | 37.1 | 37.3 | 37.4 | 37.4 | 37.3 | 37.4 | |||||
| Lemhi | Salmon | µg/m³ | 9.2 | 9.2 | 9.1 | 9 | 8.7 | 8.5 | 8.2 | 7.6 | 7.3 | 7.1 | 7.1 | 7 | 6.8 | 6.7 | 6.6 | 6.5 | 6.5 | 6.4 | 6.5 | 6.4 | 6.3 | ||||
| Lewis/Idaho | Kamiah - Nez Perce Tribe | µg/m³ | 48.9 | 48.9 | 48.5 | 47.7 | 46.3 | 45 | 43.8 | 43.1 | 41.8 | 40.2 | 38.1 | 35.7 | 34 | 31.9 | 30.5 | 29.2 | 28 | 26.5 | 26 | 24.7 | |||||
| Lewiston | Cottonwood | µg/m³ | 3301 | 26.7 | 25.4 | 24.1 | 23 | 21.9 | 20.9 | 20.1 | 19.3 | 18.6 | 18 | 17.3 | 154.9 | 463.9 | 829.2 | 1234.8 | 1683.8 | 2176.3 | 2706.9 | 3301 | |||||
| Lewiston | Juliaetta | µg/m³ | 29.1 | 27.5 | 28 | 28.4 | 28.7 | 28.9 | 29 | 29.1 | 29.1 | 28.7 | 27.4 | 26.5 | 26.1 | 25.9 | 25.6 | 25.4 | 25.3 | 24.7 | 23.9 | 24 | |||||
| Lewiston | Potlatch | µg/m³ | 26.5 | 25 | 25.4 | 25.8 | 26.2 | 26.4 | 26.5 | 26.5 | 26.4 | 26.2 | 25.4 | 24.7 | 24.4 | 24.5 | 24.8 | 25.2 | 25.6 | 25.5 | 25 | 25.4 | |||||
| Madison | Rexburg | µg/m³ | 14.9 | 14.3 | 14.4 | 14.4 | 14.5 | 14.5 | 14.5 | 14.5 | 14.6 | 14.6 | 14.7 | 14.7 | 14.7 | 14.8 | 14.9 | 14.9 | 14.9 | 14.9 | 14.8 | 14.7 | 14.6 | ||||
| Minidoka | Paul | µg/m³ | 11.2 | 11.2 | 11.1 | 10.9 | 10.8 | 10.7 | 10.5 | 10.4 | 10.3 | 10.1 | 10 | 9.9 | 9.9 | 9.8 | 9.7 | 9.7 | 9.7 | 9.5 | 9.3 | 9.1 | 8.9 | ||||
| Nez Perce | Lapwai - Nez Perce Tribe | µg/m³ | 51.3 | 48.3 | 49.4 | 50.2 | 50.7 | 51.2 | 51.3 | 51.2 | 49.9 | 47.5 | 45.4 | 43.9 | 42.4 | 41.3 | 40.5 | 40.2 | 40.2 | 39.7 | 38.1 | 38.3 | |||||
| Nez Perce | Lewiston | µg/m³ | 54.2 | 52 | 52.5 | 53.7 | 54.2 | 54 | 53.7 | 51.9 | 50.2 | 48.6 | 46.2 | 43.7 | 42.3 | 41.1 | 40.2 | 39.8 | 39.7 | 39.2 | 39.5 | 38.9 | |||||
| Shoshone | Pinehurst | µg/m³ | 45.3 | 45 | 45.1 | 45.3 | 45.1 | 45.2 | 45.2 | 45 | 44.4 | 43.5 | 43 | 41.8 | 42 | 42.2 | 42.5 | 42.7 | 43.4 | 43.7 | 42.8 | 42.7 | |||||
| Twin Falls | Twin Falls | µg/m³ | 6.5 | 6.5 | 6.4 | 6.3 | 6.3 | 6.2 | 6 | 6 | 5.8 | 5.6 | 5.5 | 5.5 | 5.4 | 5.4 | 5.5 | 5.5 | 5.6 | 5.1 | 5.4 | 6 | 6.2 | ||||
| Valley | McCall | µg/m³ | 18.2 | 18.2 | 17.2 | 15.9 | 14.5 | 13 | 11.7 | 10.7 | 9.9 | 9.2 | 9 | 8.7 | 8.2 | 7.9 | 7.6 | 7.4 | 7.1 | 6.8 | 6.8 | 6.7 | 6.7 |
