| Bannock |
Pocatello |
µg/m³ |
53.9 |
39.6 |
42.3 |
45 |
47.6 |
50.4 |
53 |
53.7 |
53.9 |
53.8 |
52.7 |
51.1 |
49.2 |
47.4 |
45.7 |
44.3 |
42.7 |
41 |
38.7 |
36.2 |
33.4 |
30.5 |
27.9 |
25.4 |
23 |
| Boise |
Idaho City |
µg/m³ |
68.4 |
57.6 |
57.5 |
57.6 |
58.2 |
58.9 |
60 |
61.1 |
62.2 |
63.2 |
64.2 |
65.3 |
66.9 |
67.6 |
68.2 |
68.4 |
68.2 |
68.1 |
68.2 |
68.3 |
68.3 |
68.3 |
68 |
67.6 |
67.3 |
| Bonner |
Sandpoint |
µg/m³ |
17.9 |
7.1 |
6.6 |
6.4 |
6 |
5.9 |
5.9 |
5.9 |
6 |
6.4 |
6.8 |
7.4 |
8 |
9.2 |
10.3 |
11.2 |
11.9 |
12.6 |
13.2 |
13.9 |
14.8 |
15.7 |
16.4 |
17 |
17.9 |
| Bonneville |
Idaho Falls |
µg/m³ |
40.9 |
30.4 |
32.1 |
33.4 |
35.1 |
36.7 |
38.2 |
39.8 |
40.6 |
40.9 |
40.2 |
39.5 |
38.3 |
37.7 |
37 |
36.1 |
34.9 |
34.5 |
32.9 |
31.1 |
29.1 |
26.8 |
24.2 |
22 |
20 |
| Boundary |
Bonners Ferry |
µg/m³ |
18 |
8.2 |
8.2 |
8.2 |
8 |
8 |
7.9 |
7.8 |
7.7 |
7.5 |
7.8 |
8.3 |
9.1 |
9.6 |
10.3 |
10.7 |
11.5 |
12.4 |
13.4 |
14.1 |
14.8 |
15.7 |
16.4 |
17.2 |
18 |
| Canyon |
Nampa |
µg/m³ |
67.5 |
50.9 |
52 |
53.7 |
55.6 |
57.1 |
58.8 |
59.5 |
59.6 |
59.6 |
59.5 |
59.3 |
59.4 |
59.5 |
59.5 |
60.6 |
61.8 |
62 |
63.1 |
63.9 |
64.9 |
65.6 |
66 |
66.6 |
67.5 |
| Clearwater |
Orofino - Nez Perce Tribe |
µg/m³ |
42.5 |
40.9 |
41.4 |
41.5 |
42 |
41.7 |
41.9 |
42 |
42.3 |
42.1 |
42.2 |
42.5 |
42.5 |
41.9 |
41.3 |
40.5 |
38.8 |
36.6 |
34.4 |
33.2 |
33.6 |
34.1 |
34.2 |
34 |
34.1 |
| Idaho |
Cottonwood |
µg/m³ |
44.9 |
42.8 |
43.6 |
44.4 |
44.9 |
44.6 |
44.5 |
43.9 |
43.7 |
43.3 |
43.5 |
43.6 |
43.8 |
43.8 |
43.9 |
44.2 |
44.4 |
44.7 |
41.2 |
35.4 |
34.7 |
34 |
32 |
30.8 |
30.6 |
| Kootenai |
Coeur d'Alene |
µg/m³ |
15.5 |
8.8 |
9.1 |
9.4 |
10 |
10.5 |
10.8 |
11.2 |
11.5 |
11.6 |
11.9 |
12.3 |
12.4 |
12.5 |
12.8 |
13 |
13.1 |
13.2 |
13.5 |
13.9 |
14.5 |
14.7 |
15.1 |
15.2 |
15.5 |
| Latah |
Juliaetta |
µg/m³ |
38.7 |
38.7 |
38.5 |
37.6 |
37.2 |
36.3 |
35.8 |
35.2 |
34.3 |
33.6 |
35.3 |
35.7 |
35.9 |
36.6 |
37.2 |
34.6 |
34.6 |
34.4 |
34.8 |
34.4 |
34.4 |
34.4 |
34.5 |
34.7 |
34.6 |
| Lemhi |
Salmon |
µg/m³ |
38.9 |
29 |
29 |
28.7 |
28.3 |
28.1 |
28.2 |
28.2 |
28.6 |
28.2 |
27.7 |
27.7 |
28.1 |
28.8 |
29.5 |
31.1 |
32.7 |
34.2 |
35.2 |
36.4 |
37.4 |
38.1 |
38.9 |
38.5 |
38 |
| Lewis |
Nezperce - Nez Perce Tribe |
µg/m³ |
54.2 |
49.5 |
51.5 |
52 |
52 |
52.4 |
52.7 |
52.8 |
52.8 |
52.9 |
53.1 |
53.4 |
53.5 |
54 |
54.1 |
54.2 |
53.6 |
50 |
45.2 |
41.1 |
38.3 |
37.5 |
36.2 |
34.6 |
32.9 |
| Lewis |
Reubens - Nez Perce Tribe |
µg/m³ |
47.3 |
46.8 |
47.1 |
47.3 |
47 |
47.2 |
47.1 |
46.7 |
46.6 |
46.5 |
45.3 |
43.9 |
42.7 |
41.8 |
39.5 |
39 |
38.6 |
38.3 |
37.5 |
36.1 |
35.4 |
34.2 |
32.8 |
31.8 |
29.3 |
| Lewis/Idaho |
Kamiah - Nez Perce Tribe |
µg/m³ |
58.1 |
54.2 |
54.3 |
54.3 |
54.9 |
55.2 |
55.8 |
56.4 |
56.9 |
56.2 |
56.1 |
56.3 |
56.3 |
56.7 |
57.4 |
57.9 |
58.1 |
57.5 |
54.6 |
49.4 |
44.9 |
40.9 |
38.1 |
36.5 |
35.1 |
| Nez Perce |
Lapwai - Nez Perce Tribe |
µg/m³ |
77.2 |
75.8 |
76.9 |
77.2 |
76.6 |
76.3 |
76.3 |
76.5 |
73.6 |
66.4 |
57.5 |
49.8 |
47.9 |
47 |
45.8 |
45.3 |
44.8 |
43.9 |
44 |
43.7 |
43.9 |
43.8 |
43.4 |
43.1 |
42.5 |
| Nez Perce |
Lewiston |
µg/m³ |
99.4 |
99.4 |
98.3 |
98 |
93.9 |
87.9 |
74.8 |
70 |
67.5 |
64.4 |
57.4 |
54.3 |
52.6 |
50.5 |
49.5 |
48.9 |
48.4 |
48.3 |
48 |
48 |
48.1 |
47.7 |
47.5 |
47 |
46.6 |
| Shoshone |
Pinehurst |
µg/m³ |
18.3 |
13.5 |
14 |
14.6 |
15 |
15.4 |
15.8 |
16.5 |
17.2 |
17.5 |
17.9 |
18.1 |
18.1 |
18.2 |
18.3 |
18.1 |
17.7 |
16.7 |
16 |
15.4 |
15 |
14.8 |
14.5 |
14.3 |
14 |
| Twin Falls |
Twin Falls |
µg/m³ |
68.6 |
67.3 |
66.9 |
67 |
66.8 |
67.4 |
68.2 |
68.6 |
67.7 |
67 |
66 |
65.5 |
65.1 |
65 |
64.8 |
64.9 |
64.9 |
64.8 |
64.3 |
63.7 |
63.2 |
63.7 |
64.5 |
65 |
65 |