| Bannock |
Pocatello |
µg/m³ |
7.7 |
6.4 |
6.4 |
6.2 |
6.1 |
6 |
6 |
6.1 |
6.2 |
6.2 |
6.2 |
6 |
6.1 |
6.4 |
6.7 |
6.7 |
6.7 |
6.7 |
6.8 |
7.2 |
7.3 |
7.4 |
7.5 |
7.6 |
7.7 |
| Boise |
Idaho City |
µg/m³ |
36.1 |
22.5 |
23.7 |
25 |
26.1 |
27.1 |
28.3 |
29.4 |
30.7 |
31.9 |
33.3 |
34.1 |
35.6 |
36.1 |
36 |
35.3 |
34.4 |
33.4 |
32 |
30.8 |
29.6 |
28.7 |
27.7 |
26.4 |
25.1 |
| Bonneville |
Idaho Falls |
µg/m³ |
7 |
6.4 |
6.3 |
6.3 |
6.3 |
6 |
5.8 |
6 |
6 |
6.2 |
6.3 |
6.4 |
6.6 |
6.6 |
6.5 |
6.7 |
6.7 |
6.6 |
6.7 |
6.8 |
6.9 |
6.8 |
6.9 |
7 |
6.7 |
| Boundary |
Bonners Ferry |
µg/m³ |
18.9 |
18.3 |
18.6 |
18.7 |
18.9 |
18.8 |
18.8 |
18.6 |
17.9 |
17.4 |
16.9 |
16.4 |
15.6 |
15.1 |
14.3 |
13.7 |
13.2 |
12.6 |
12.1 |
11.5 |
11 |
10.6 |
10.4 |
10.1 |
9.8 |
| Canyon |
Nampa |
µg/m³ |
26.8 |
18.9 |
19.2 |
19.8 |
20.4 |
21 |
21.4 |
22.4 |
23 |
24.1 |
24.8 |
25.3 |
25.7 |
26.1 |
26.5 |
26.8 |
26.7 |
26.1 |
25.5 |
25 |
24.2 |
23.6 |
22.8 |
22.7 |
22.1 |
| Clearwater |
Orofino - Nez Perce Tribe |
µg/m³ |
58.4 |
58.4 |
55.4 |
51.9 |
47.8 |
42.5 |
37.5 |
32.9 |
28 |
23 |
17 |
12.6 |
10 |
9.8 |
9.6 |
9.7 |
10 |
10.3 |
10.6 |
10.7 |
11 |
11.1 |
11.4 |
11.6 |
11.8 |
| Idaho |
Cottonwood |
µg/m³ |
16.4 |
16.4 |
15.5 |
15 |
14.6 |
14 |
13.4 |
12.7 |
11.6 |
11.2 |
11.5 |
11.9 |
11.8 |
12.2 |
13.7 |
14.3 |
14.5 |
14.8 |
14.9 |
14.9 |
15.2 |
15.4 |
15.7 |
15.6 |
15.4 |
| Idaho |
Grangeville |
µg/m³ |
19.3 |
19.3 |
18.8 |
18.6 |
18.2 |
17.7 |
16.9 |
15.8 |
15 |
14.3 |
13.5 |
13.1 |
12.5 |
12 |
11.8 |
12 |
12.7 |
13.5 |
13.9 |
14.3 |
14.7 |
15.3 |
15.6 |
16 |
16.4 |
| Kootenai |
Coeur d'Alene |
µg/m³ |
16.7 |
16.7 |
15.7 |
14.6 |
13.5 |
12.2 |
11.2 |
10.4 |
9.5 |
8.8 |
8.5 |
8 |
7.5 |
6.9 |
6.4 |
6 |
5.5 |
5.3 |
5.2 |
5 |
4.8 |
4.6 |
4.5 |
4.3 |
4.3 |
| Latah |
Juliaetta |
µg/m³ |
24 |
24 |
22 |
20.1 |
18.3 |
16.3 |
14.6 |
12.7 |
10.6 |
10.6 |
8.3 |
6.3 |
6.7 |
6.6 |
6.1 |
6.3 |
6.3 |
6.2 |
6.7 |
6.6 |
6.6 |
6.9 |
6.9 |
7.3 |
7.6 |
| Lemhi |
Salmon |
µg/m³ |
122.5 |
37.5 |
39.2 |
41.8 |
44.7 |
48.4 |
52.3 |
56.6 |
61.1 |
66.5 |
72.3 |
77.8 |
83.2 |
88.5 |
94.2 |
99.7 |
104.4 |
108.7 |
112.3 |
115.6 |
118.4 |
120.2 |
121.3 |
121.9 |
122.5 |
| Lewis |
Nezperce - Nez Perce Tribe |
µg/m³ |
30.7 |
30.7 |
29.2 |
27.8 |
25.4 |
23.5 |
22.2 |
21 |
19.8 |
18.4 |
16 |
13.8 |
12.8 |
12.8 |
13 |
13.6 |
13.8 |
14.1 |
14.5 |
14.7 |
14.9 |
15.1 |
15.3 |
15.2 |
15 |
| Lewis |
Reubens - Nez Perce Tribe |
µg/m³ |
21 |
21 |
20.8 |
21 |
20.9 |
20.7 |
20.2 |
20.2 |
19.4 |
18.9 |
18 |
18 |
16.3 |
14.5 |
11.8 |
11.9 |
11.8 |
12 |
12.2 |
12.3 |
12 |
12 |
11.5 |
11.3 |
11.4 |
| Lewis/Idaho |
Kamiah - Nez Perce Tribe |
µg/m³ |
83.5 |
83.5 |
75.2 |
67.7 |
60.8 |
55.5 |
50.4 |
44.2 |
38.6 |
33.2 |
27.9 |
22.4 |
17.8 |
15.5 |
14.6 |
14.7 |
15.7 |
16 |
15.7 |
16.7 |
17.8 |
18.2 |
18.5 |
18.5 |
19.1 |
| Nez Perce |
Lapwai - Nez Perce Tribe |
µg/m³ |
22.2 |
22.2 |
21.3 |
20.7 |
19.8 |
19.3 |
18.6 |
18 |
17.1 |
14.2 |
10.9 |
9.3 |
8.4 |
7.8 |
8 |
7.8 |
7.7 |
7.6 |
8.2 |
8.1 |
8.3 |
8.4 |
8.7 |
8.5 |
8.5 |
| Nez Perce |
Lewiston |
µg/m³ |
34.3 |
34.3 |
32.3 |
30.2 |
28.3 |
26.6 |
24 |
21 |
18.7 |
17.1 |
14.2 |
12.2 |
10.4 |
9.7 |
9.7 |
9.7 |
9.7 |
9.9 |
10.1 |
10.1 |
10.2 |
10.4 |
10.3 |
10.2 |
10.3 |
| Shoshone |
Pinehurst |
µg/m³ |
18.6 |
18.6 |
17.5 |
16.6 |
15.3 |
14 |
13.2 |
12.4 |
11.4 |
10.5 |
9.6 |
8.8 |
8 |
7.5 |
6.9 |
6.2 |
5.9 |
5.6 |
5.6 |
5.6 |
5.5 |
5.7 |
5.7 |
6 |
6.2 |
| Twin Falls |
Twin Falls |
µg/m³ |
20.3 |
15 |
15.2 |
15.5 |
15.7 |
16 |
16.3 |
16.8 |
17.3 |
17.3 |
17.5 |
17.2 |
17 |
16.9 |
16.9 |
17.1 |
17.3 |
17.8 |
18.3 |
18.8 |
19.1 |
19.4 |
19.9 |
20.1 |
20.3 |