| Bannock |
Pocatello |
µg/m³ |
35.6 |
18.6 |
19.8 |
20.9 |
22.3 |
23.7 |
24.9 |
26.2 |
27.5 |
28.2 |
29.8 |
30.9 |
32 |
33.3 |
34.3 |
35.1 |
35.6 |
35.4 |
35.5 |
35.6 |
35.5 |
35.3 |
35.5 |
35.5 |
35.5 |
| Boise |
Idaho City |
µg/m³ |
42.4 |
37.5 |
37.2 |
36.9 |
36.6 |
36.7 |
36.7 |
36.8 |
36.7 |
37 |
37.3 |
38 |
38.7 |
39.2 |
39.7 |
40.6 |
41.6 |
42 |
42.4 |
42.2 |
42.1 |
42.1 |
41.9 |
42 |
41.8 |
| Bonner |
Sandpoint |
µg/m³ |
17.2 |
17.2 |
17.2 |
16.9 |
16.9 |
16.8 |
16.7 |
16.5 |
16.3 |
15.9 |
15.6 |
15.5 |
15.5 |
15.7 |
15.9 |
15.9 |
15.8 |
15.5 |
15.2 |
15.2 |
14.9 |
14.7 |
14.3 |
14 |
13.8 |
| Bonneville |
Idaho Falls |
µg/m³ |
33.4 |
19.7 |
20.6 |
21.4 |
22.3 |
23.1 |
24 |
25 |
25.9 |
27 |
28 |
29.1 |
30.4 |
31.8 |
32.6 |
33.2 |
33.4 |
33.2 |
32.5 |
32.2 |
31.9 |
31.5 |
31.2 |
31.2 |
30.7 |
| Boundary |
Bonners Ferry |
µg/m³ |
18.3 |
18.3 |
18.2 |
17.9 |
17.7 |
17.4 |
17.2 |
16.9 |
16.6 |
16.5 |
16.1 |
16.1 |
16 |
15.9 |
15.5 |
15.6 |
15.7 |
15.4 |
15.1 |
14.7 |
14.3 |
14 |
13.8 |
13.7 |
13.8 |
| Canyon |
Nampa |
µg/m³ |
49 |
40.5 |
41 |
41.6 |
42.2 |
42.3 |
42.5 |
43 |
43.2 |
43.5 |
43.7 |
45 |
46.3 |
47.4 |
48.1 |
48.3 |
48 |
47.4 |
47.2 |
47.5 |
48.5 |
49 |
48.9 |
48.6 |
48.2 |
| Clearwater |
Orofino - Nez Perce Tribe |
µg/m³ |
29.9 |
22.5 |
21.9 |
21.4 |
20.5 |
20.2 |
19.6 |
19.1 |
18.7 |
18.2 |
18.1 |
17.6 |
17.7 |
17.1 |
16.7 |
15.5 |
15.5 |
18.7 |
22.5 |
24.7 |
25.8 |
26.7 |
27.6 |
28.7 |
29.9 |
| Idaho |
Cottonwood |
µg/m³ |
21.9 |
21.9 |
21.7 |
21.1 |
20.6 |
20.5 |
20.3 |
20.1 |
19.9 |
19.9 |
20 |
20.4 |
21.5 |
21.8 |
21.6 |
21.5 |
21.3 |
20.8 |
19.8 |
19.8 |
19.6 |
19.4 |
19.4 |
19.2 |
19.1 |
| Kootenai |
Coeur d'Alene |
µg/m³ |
16.3 |
14.9 |
14.8 |
14.4 |
14 |
13.6 |
13.2 |
13 |
13 |
13.2 |
13.1 |
12.9 |
13.4 |
14 |
14.2 |
14.6 |
14.9 |
14.9 |
14.9 |
14.9 |
15.4 |
15.6 |
15.8 |
16 |
16.3 |
| Latah |
Juliaetta |
µg/m³ |
35.2 |
21.3 |
20.8 |
20.4 |
20 |
19.6 |
19.3 |
19 |
18.7 |
18.6 |
18.1 |
17.3 |
16.5 |
15.4 |
14.5 |
14.2 |
20.2 |
27 |
28.7 |
30.2 |
31.9 |
33.2 |
33.9 |
34.6 |
35.2 |
| Lemhi |
Salmon |
µg/m³ |
32.7 |
24.7 |
25.1 |
25.7 |
26.3 |
26.9 |
27.6 |
28 |
28.7 |
29.3 |
29.5 |
29.7 |
29.9 |
30.2 |
30.2 |
30.2 |
30 |
30.6 |
30.9 |
31.3 |
31.2 |
31.6 |
32.1 |
32.5 |
32.7 |
| Lewis |
Nezperce - Nez Perce Tribe |
µg/m³ |
25.5 |
22.1 |
22.2 |
21.7 |
21.8 |
21.8 |
21.7 |
21.3 |
21.6 |
21.9 |
21.4 |
20.8 |
21 |
20.8 |
20 |
20 |
19.5 |
19.1 |
18.3 |
20.3 |
21.4 |
22.4 |
23.1 |
24.3 |
25.5 |
| Lewis |
Reubens - Nez Perce Tribe |
µg/m³ |
22.8 |
22.1 |
21.8 |
21.7 |
21.8 |
22.2 |
22.4 |
22.8 |
22.6 |
22.6 |
22.3 |
22.7 |
22.5 |
22.1 |
21.6 |
21.1 |
20.4 |
20.4 |
19.7 |
18.5 |
17.5 |
16.8 |
17.2 |
16.9 |
16.8 |
| Lewis/Idaho |
Kamiah - Nez Perce Tribe |
µg/m³ |
27.4 |
25.2 |
24.7 |
24.1 |
23.7 |
23.3 |
23 |
22.4 |
22.2 |
21.8 |
21.3 |
20.7 |
20.7 |
20.3 |
20.2 |
19.7 |
19.5 |
18.8 |
20.7 |
22 |
23.5 |
24.2 |
25.6 |
26.4 |
27.4 |
| Nez Perce |
Lapwai - Nez Perce Tribe |
µg/m³ |
27.7 |
27.7 |
27.7 |
26.6 |
25.5 |
25 |
24.6 |
24.3 |
24 |
23 |
22.3 |
22 |
21.6 |
20.7 |
19.5 |
19.2 |
19.1 |
18.7 |
17.9 |
17.2 |
17 |
16.7 |
16.1 |
16.2 |
15.8 |
| Nez Perce |
Lewiston |
µg/m³ |
43.5 |
43.5 |
42.9 |
38.8 |
36.6 |
35 |
33.9 |
32.1 |
29 |
25.8 |
23.6 |
22.6 |
22.1 |
21 |
20.6 |
20.3 |
19.9 |
19.5 |
19 |
18.6 |
18.2 |
17.5 |
17.3 |
17.2 |
17.1 |
| Shoshone |
Pinehurst |
µg/m³ |
14.1 |
13.9 |
13.7 |
13.5 |
13.2 |
13.1 |
13.1 |
13 |
13 |
12.7 |
12.7 |
12.8 |
12.4 |
12.1 |
12.2 |
12.1 |
11.7 |
11.3 |
11.7 |
12.1 |
12.4 |
12.8 |
13.3 |
13.7 |
14.1 |
| Twin Falls |
Twin Falls |
µg/m³ |
42 |
36.5 |
37.3 |
38.1 |
38.9 |
39.5 |
39.9 |
40 |
40.2 |
40.3 |
40.5 |
40.6 |
40.5 |
40.2 |
40.5 |
40.6 |
40.6 |
40.6 |
40.8 |
41 |
41.2 |
41.5 |
41.7 |
42 |
42 |