| Bannock |
Pocatello |
µg/m³ |
20.3 |
20.3 |
17.5 |
15.1 |
12.6 |
10 |
7.7 |
7 |
6.9 |
7.2 |
7.4 |
7.7 |
8.1 |
8.3 |
8.7 |
9.5 |
9.8 |
10.7 |
11.8 |
12.9 |
14 |
15.1 |
16 |
16.9 |
17.7 |
| Boise |
Idaho City |
µg/m³ |
67 |
67 |
66.1 |
65.2 |
64 |
62.5 |
61 |
59.4 |
58.2 |
56.6 |
55.2 |
53.4 |
51.2 |
49.2 |
47.4 |
45.8 |
44.5 |
43.2 |
42.2 |
41.6 |
41.1 |
40.3 |
39.7 |
39.1 |
38.4 |
| Bonner |
Sandpoint |
µg/m³ |
21.2 |
18.5 |
19 |
19.5 |
20 |
20.5 |
20.7 |
21 |
20.9 |
21.1 |
21.2 |
21 |
20.7 |
19.7 |
19.2 |
19 |
19 |
18.9 |
18.7 |
18.3 |
18 |
17.6 |
17.5 |
17.5 |
17.4 |
| Bonneville |
Idaho Falls |
µg/m³ |
18.7 |
18.6 |
17 |
15.9 |
14.7 |
13.4 |
12.2 |
10.9 |
10.2 |
9.8 |
9.6 |
9.5 |
9.5 |
9.5 |
10.3 |
11.1 |
12.1 |
12.1 |
13.4 |
14.4 |
15.3 |
16.2 |
17.2 |
17.8 |
18.7 |
| Boundary |
Bonners Ferry |
µg/m³ |
23.1 |
18.6 |
19.3 |
20 |
20.5 |
21.2 |
21.6 |
22.3 |
22.8 |
23.1 |
22.5 |
21.7 |
21 |
20.9 |
20.9 |
21.1 |
20.7 |
20.4 |
19.8 |
19.5 |
19.6 |
19.2 |
19 |
18.8 |
18.5 |
| Canyon |
Nampa |
µg/m³ |
67.3 |
67.3 |
66.4 |
65.2 |
64.5 |
64.1 |
62.6 |
61.1 |
60.7 |
60.1 |
59.4 |
58.6 |
57.5 |
56.3 |
54.8 |
52.8 |
50.8 |
50.6 |
49.2 |
47.6 |
46 |
44.5 |
43.5 |
42.4 |
41 |
| Clearwater |
Orofino - Nez Perce Tribe |
µg/m³ |
34 |
34 |
33.9 |
33.7 |
33.6 |
33.6 |
33.6 |
33.5 |
33.5 |
33.2 |
32.9 |
32.7 |
32.6 |
33.2 |
33.5 |
33.6 |
32.6 |
31 |
29.6 |
28 |
26.5 |
25.3 |
24.6 |
23.8 |
23.1 |
| Idaho |
Cottonwood |
µg/m³ |
30.3 |
30.3 |
29.3 |
28.5 |
28.1 |
27.8 |
27.7 |
27.6 |
27.5 |
27.3 |
26.7 |
26.5 |
26.1 |
25.8 |
25.5 |
24.9 |
24.3 |
24.4 |
24.7 |
24.4 |
24 |
23.6 |
23.2 |
22.8 |
22.4 |
| Kootenai |
Coeur d'Alene |
µg/m³ |
16.7 |
15.5 |
15.7 |
16 |
16.3 |
16.4 |
16.7 |
16.7 |
16.5 |
16.2 |
16.1 |
16 |
16.1 |
16.2 |
16.3 |
16.3 |
16.3 |
16.3 |
16.5 |
16.5 |
16.2 |
16 |
15.6 |
15.5 |
15 |
| Latah |
Juliaetta |
µg/m³ |
35.3 |
34.7 |
34.6 |
34.9 |
35 |
35.3 |
35.1 |
35.3 |
35.3 |
35.2 |
32.8 |
32.5 |
32.1 |
29.4 |
26.4 |
25.7 |
25.1 |
24.5 |
24.1 |
23.7 |
23.5 |
23.1 |
22.5 |
21.8 |
21.7 |
| Lemhi |
Salmon |
µg/m³ |
37.5 |
37.5 |
37 |
36.6 |
36.2 |
35.7 |
35.1 |
34.4 |
33.2 |
32.6 |
32.2 |
31.7 |
31.2 |
30.1 |
29.5 |
28.8 |
28.2 |
26.9 |
26.4 |
25.6 |
25.1 |
24.7 |
24.1 |
24.2 |
24.4 |
| Lewis |
Nezperce - Nez Perce Tribe |
µg/m³ |
31.2 |
31.2 |
29.2 |
28.7 |
28.3 |
27.6 |
27.2 |
26.9 |
26.2 |
25.6 |
25.5 |
25.5 |
25.4 |
24.9 |
25.2 |
25.2 |
25.5 |
25.7 |
25 |
23.9 |
23.7 |
23.6 |
23.2 |
22.9 |
22.6 |
| Lewis |
Reubens - Nez Perce Tribe |
µg/m³ |
26.8 |
26.8 |
26.1 |
25.7 |
25.5 |
25.1 |
24.8 |
24.2 |
24 |
23.6 |
23.8 |
23.9 |
24.6 |
24.7 |
25.2 |
24.9 |
24.5 |
23.4 |
23 |
23 |
23.2 |
23.1 |
22.5 |
22.3 |
21.9 |
| Lewis/Idaho |
Kamiah - Nez Perce Tribe |
µg/m³ |
34.1 |
34.1 |
33.1 |
32.3 |
31.2 |
30.3 |
29.3 |
28.5 |
27.7 |
27.4 |
27.7 |
27.8 |
27.6 |
27.6 |
26.9 |
27 |
27 |
27.5 |
27.7 |
27.5 |
27.2 |
27 |
26.2 |
25.7 |
25.5 |
| Nez Perce |
Lapwai - Nez Perce Tribe |
µg/m³ |
41.8 |
41.8 |
40.5 |
40.4 |
40.7 |
40.1 |
38.9 |
38 |
34.3 |
31.2 |
30.5 |
30.5 |
30.2 |
30.5 |
31.1 |
30.5 |
29.5 |
29.4 |
29 |
29 |
28.6 |
28.2 |
28.2 |
28.1 |
28 |
| Nez Perce |
Lewiston |
µg/m³ |
51.6 |
46.7 |
47 |
49.7 |
51.1 |
51 |
51.6 |
49.4 |
48.1 |
47.2 |
46.8 |
46.5 |
45.9 |
46.2 |
46 |
45.4 |
44.9 |
44.7 |
44.5 |
44 |
43.5 |
43.6 |
43.2 |
43.4 |
43.4 |
| Shoshone |
Pinehurst |
µg/m³ |
14.7 |
13.7 |
13.7 |
13.7 |
13.7 |
13.8 |
13.7 |
13.7 |
13.5 |
13.6 |
13.4 |
13.3 |
13.5 |
13.7 |
14 |
14.3 |
14.5 |
14.7 |
14.6 |
14.6 |
14.7 |
14.3 |
14.1 |
14 |
13.9 |
| Twin Falls |
Twin Falls |
µg/m³ |
62.5 |
62.5 |
60.2 |
58.2 |
56.6 |
54.4 |
52.6 |
51 |
49.1 |
48 |
47.2 |
46.5 |
45.7 |
45.2 |
44.4 |
43.4 |
42.3 |
41.5 |
40.7 |
40.2 |
39.7 |
38.7 |
37.6 |
36.5 |
35.2 |