| Bannock |
Pocatello |
µg/m³ |
9.4 |
8 |
8 |
7.9 |
7.9 |
7.9 |
7.9 |
7.8 |
7.8 |
7.8 |
8 |
8.3 |
8.5 |
8.8 |
9 |
9.3 |
9.4 |
9.4 |
9.3 |
9.2 |
9.1 |
9 |
8.7 |
8.7 |
8.5 |
| Boise |
Idaho City |
µg/m³ |
37.9 |
36.8 |
37.4 |
37.6 |
37.8 |
37.8 |
37.9 |
37.2 |
36.2 |
35.3 |
33.7 |
29.4 |
26.9 |
26 |
24.7 |
24 |
23.3 |
22.7 |
22.2 |
21.7 |
20.5 |
20 |
19.3 |
18.1 |
16.8 |
| Bonneville |
Idaho Falls |
µg/m³ |
8.5 |
7.3 |
7.3 |
7.3 |
7.5 |
7.5 |
7.8 |
8 |
8.1 |
8 |
8 |
8 |
8 |
8.1 |
8.3 |
8.3 |
8.2 |
8.3 |
8.4 |
8.4 |
8.2 |
8.5 |
8.3 |
8.1 |
7.9 |
| Boundary |
Bonners Ferry |
µg/m³ |
11.6 |
9 |
8.7 |
8.4 |
8.6 |
8.4 |
8.2 |
8.2 |
8.5 |
8.8 |
8.9 |
9 |
9.3 |
9.5 |
9.7 |
9.8 |
9.8 |
10.1 |
10.3 |
10.6 |
10.7 |
11 |
11.1 |
11.3 |
11.6 |
| Canyon |
Nampa |
µg/m³ |
12 |
12 |
11.5 |
11.4 |
11 |
10.9 |
10.8 |
10.7 |
10.7 |
10.7 |
10.5 |
10.3 |
10.3 |
10.1 |
9.8 |
9.6 |
9.5 |
10 |
10.5 |
10.9 |
11.3 |
11.3 |
11.4 |
11.6 |
11.8 |
| Clearwater |
Orofino - Nez Perce Tribe |
µg/m³ |
58.9 |
38.7 |
38.6 |
38.5 |
38.6 |
38.6 |
38.6 |
38.9 |
39 |
39.4 |
39.7 |
39.3 |
38.5 |
38.7 |
41.2 |
43.9 |
46.6 |
48.5 |
49.8 |
51.2 |
52.9 |
54.1 |
55.5 |
57.1 |
58.9 |
| Idaho |
Cottonwood |
µg/m³ |
54 |
38.7 |
38.6 |
38.4 |
38.4 |
38.2 |
38.5 |
38.8 |
38.3 |
37.3 |
36.8 |
36.5 |
37.3 |
38.6 |
42.3 |
44.9 |
47.6 |
50.4 |
51.4 |
51.5 |
51.5 |
52 |
52.3 |
53 |
54 |
| Idaho |
Grangeville |
µg/m³ |
60.6 |
34.6 |
34.9 |
35.4 |
35.6 |
35.8 |
36.2 |
36.7 |
37.7 |
39.2 |
40.5 |
41.8 |
43.1 |
44.5 |
45.9 |
47.4 |
51.1 |
56.2 |
58 |
59.6 |
60.4 |
60.6 |
60.5 |
59.7 |
59.5 |
| Kootenai |
Coeur d'Alene |
µg/m³ |
22.9 |
20.2 |
20 |
19.7 |
19.2 |
19.1 |
18.5 |
18.5 |
18.2 |
18 |
17.6 |
17.3 |
17 |
16.7 |
16.7 |
17.3 |
18 |
18.7 |
19.6 |
20.4 |
20.8 |
21.5 |
22.2 |
22.6 |
22.9 |
| Latah |
Juliaetta |
µg/m³ |
55.7 |
37.6 |
37.5 |
37.3 |
37.3 |
37.4 |
37.5 |
37.6 |
37.5 |
37.1 |
38.5 |
40.5 |
41.4 |
42.2 |
43.6 |
44.8 |
46 |
47.2 |
48.9 |
50.1 |
51.3 |
52.5 |
53.5 |
54.8 |
55.7 |
| Lemhi |
Salmon |
µg/m³ |
26.3 |
26.2 |
26.2 |
26.2 |
26.2 |
26.2 |
26.3 |
26.2 |
26 |
26.1 |
25.9 |
25.8 |
25.6 |
25.4 |
25.2 |
25.3 |
25.3 |
24.6 |
23.7 |
23 |
22.1 |
22.3 |
22.3 |
22.4 |
22.9 |
| Lewis |
Nezperce - Nez Perce Tribe |
µg/m³ |
65.4 |
42.9 |
42.5 |
42.5 |
44.5 |
45.4 |
46.5 |
47.9 |
48 |
48.9 |
49.9 |
49.4 |
49 |
50.3 |
54.3 |
56.9 |
59.5 |
62.1 |
64.1 |
65.3 |
65.3 |
65.1 |
65.4 |
65 |
65.1 |
| Lewis |
Reubens - Nez Perce Tribe |
µg/m³ |
45.4 |
33.5 |
33.3 |
32.8 |
32.4 |
32.4 |
31.9 |
32 |
31.9 |
31.4 |
31.5 |
31.4 |
32.2 |
33.5 |
35.9 |
38.7 |
41 |
43 |
44 |
44.7 |
45 |
45.4 |
44.7 |
43.9 |
43.2 |
| Lewis/Idaho |
Kamiah - Nez Perce Tribe |
µg/m³ |
141.6 |
61.5 |
62.4 |
62.7 |
63.4 |
63.8 |
64 |
64.7 |
65.1 |
65.2 |
65.8 |
63.8 |
63.9 |
65.5 |
69.2 |
75.7 |
81.9 |
88.4 |
94.8 |
102.4 |
109.4 |
117 |
125.2 |
134 |
141.6 |
| Nez Perce |
Lapwai - Nez Perce Tribe |
µg/m³ |
51.4 |
35.6 |
35.7 |
36.4 |
36.4 |
36.3 |
36.2 |
36.2 |
36.4 |
36.9 |
37.4 |
38.6 |
39.4 |
40.3 |
41.4 |
43.5 |
45.4 |
47 |
48.1 |
49.2 |
50.2 |
51.2 |
51.2 |
51.4 |
51.3 |
| Nez Perce |
Lewiston |
µg/m³ |
44 |
36.7 |
36.5 |
36.9 |
37 |
36.9 |
36.8 |
36.7 |
36.8 |
36.2 |
35.9 |
35.7 |
36 |
36 |
36.8 |
37.7 |
38.4 |
39.7 |
41.2 |
42.5 |
43.5 |
44 |
43.8 |
43.5 |
43.8 |
| Shoshone |
Pinehurst |
µg/m³ |
25.1 |
25 |
25.1 |
24.8 |
24.7 |
24 |
24 |
23.7 |
23.3 |
22.9 |
22.3 |
21.9 |
21.6 |
21 |
20.4 |
20.3 |
20.5 |
21.1 |
22.1 |
22.6 |
23 |
23.5 |
23.8 |
24 |
24.3 |
| Twin Falls |
Twin Falls |
µg/m³ |
20.2 |
18.4 |
18.9 |
19 |
19.2 |
19.2 |
19.2 |
19.2 |
19 |
18.8 |
19 |
19 |
19.2 |
19.5 |
19.7 |
20 |
20.2 |
20 |
19.7 |
18.7 |
18.1 |
17.4 |
17 |
16.6 |
16.1 |