| Bannock |
Pocatello |
µg/m³ |
12.6 |
12.6 |
12.1 |
12 |
12 |
12 |
12.1 |
11.9 |
11.8 |
11.6 |
11.5 |
11.5 |
11.5 |
11.7 |
11.5 |
11.5 |
11.5 |
11.4 |
11.4 |
11.4 |
11.1 |
10.8 |
10.7 |
10.4 |
10.1 |
| Boise |
Idaho City |
µg/m³ |
108.5 |
108.5 |
107.1 |
105.6 |
103.7 |
101.9 |
99.5 |
97.2 |
94.2 |
89.5 |
83.4 |
79.2 |
74.6 |
69.9 |
67.7 |
65.7 |
64.4 |
63.4 |
62.7 |
61.6 |
59.7 |
57.6 |
55.5 |
53.5 |
51.7 |
| Bonneville |
Idaho Falls |
µg/m³ |
9.1 |
8.2 |
8.1 |
8.2 |
8.1 |
8.1 |
8.1 |
8.3 |
8.5 |
8.6 |
8.9 |
9 |
9.1 |
9.1 |
9 |
8.9 |
8.7 |
8.7 |
8.7 |
8.3 |
8.2 |
8.1 |
8.1 |
8.1 |
8.2 |
| Boundary |
Bonners Ferry |
µg/m³ |
2.8 |
2 |
1.9 |
2.1 |
2.2 |
1.9 |
1.7 |
1.5 |
1.5 |
1.6 |
1.7 |
1.5 |
1.6 |
1.6 |
1.7 |
1.8 |
2.1 |
2.2 |
2.2 |
2.3 |
2.5 |
2.5 |
2.8 |
2.8 |
2.8 |
| Canyon |
Nampa |
µg/m³ |
93 |
92.9 |
93 |
92.5 |
91.9 |
90.6 |
88.3 |
86.8 |
84.5 |
81.6 |
78.6 |
75.8 |
73.7 |
71.6 |
69.8 |
68.1 |
65.6 |
63.2 |
60.8 |
58.5 |
56 |
53.4 |
51.2 |
48.7 |
46.3 |
| Clearwater |
Orofino - Nez Perce Tribe |
µg/m³ |
19.8 |
12.4 |
12.5 |
12.6 |
12.7 |
12.8 |
12.9 |
13.1 |
13.4 |
13.4 |
12.5 |
12 |
12.5 |
13.5 |
14.5 |
16.2 |
16.8 |
17 |
17 |
17.2 |
17.5 |
18 |
18.4 |
19 |
19.8 |
| Idaho |
Cottonwood |
µg/m³ |
25.3 |
19.6 |
19.7 |
19.7 |
20.1 |
20.6 |
20.8 |
21 |
22.1 |
22.8 |
23.5 |
25 |
25.3 |
21.8 |
20.9 |
21 |
21.3 |
21.9 |
22.1 |
22.5 |
22.5 |
22.7 |
22.9 |
23.3 |
23.6 |
| Idaho |
Grangeville |
µg/m³ |
26.4 |
11.1 |
11 |
11.1 |
11 |
11.1 |
11.5 |
12.1 |
12.6 |
12.9 |
13.7 |
14.6 |
15.4 |
16.2 |
16.9 |
17.7 |
18.5 |
19.3 |
20 |
20.6 |
21.6 |
22.9 |
23.7 |
24.9 |
26.4 |
| Kootenai |
Coeur d'Alene |
µg/m³ |
5 |
5 |
5 |
4.9 |
4.9 |
4.6 |
4.3 |
4.2 |
4.2 |
4.2 |
4.2 |
4.2 |
4.2 |
4.2 |
4 |
3.9 |
4 |
4.1 |
4.2 |
4.2 |
4.2 |
4.1 |
3.7 |
3.6 |
3.4 |
| Latah |
Juliaetta |
µg/m³ |
14.6 |
11.9 |
12.1 |
12 |
12 |
12 |
12.2 |
12.1 |
12 |
11.9 |
11.5 |
12.4 |
12.6 |
12.3 |
12.5 |
12.7 |
12.7 |
12.9 |
13.3 |
13.6 |
13.9 |
14 |
14.2 |
14.5 |
14.6 |
| Lemhi |
Salmon |
µg/m³ |
42.6 |
42.6 |
42.4 |
42.3 |
42.4 |
42.5 |
42.3 |
42.2 |
42.1 |
41.8 |
41.6 |
41.2 |
41.1 |
41.3 |
41 |
40.4 |
39.5 |
38.9 |
38.5 |
38.1 |
37.5 |
37 |
36.9 |
36.7 |
37 |
| Lewis |
Nezperce - Nez Perce Tribe |
µg/m³ |
29.9 |
28.5 |
28.7 |
29 |
29.4 |
29.9 |
29.2 |
29.6 |
29.3 |
27.4 |
25.7 |
15.2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Lewis |
Reubens - Nez Perce Tribe |
µg/m³ |
18.9 |
17.2 |
17.6 |
18.1 |
18.2 |
18.4 |
18.6 |
18.8 |
18.9 |
18.8 |
17.8 |
17 |
16.2 |
15.7 |
14.8 |
15.1 |
15.5 |
15.6 |
16 |
16.5 |
16.5 |
16.5 |
16.6 |
16.6 |
16.7 |
| Lewis/Idaho |
Kamiah - Nez Perce Tribe |
µg/m³ |
41.3 |
21.2 |
21.6 |
22.2 |
22.3 |
22.7 |
23.1 |
23.2 |
23.4 |
23.6 |
23.2 |
22.9 |
22.8 |
24.9 |
25 |
25.8 |
27.9 |
29.4 |
30.7 |
31.7 |
33.5 |
35.6 |
38.1 |
40 |
41.3 |
| Nez Perce |
Lapwai - Nez Perce Tribe |
µg/m³ |
16 |
13.9 |
14.5 |
14.7 |
14.9 |
15 |
15.2 |
15.2 |
15.4 |
15.6 |
15.8 |
16 |
16 |
15.4 |
14.7 |
14.4 |
14.1 |
14.2 |
14 |
13.7 |
13.5 |
13.4 |
13.2 |
13 |
13 |
| Nez Perce |
Lewiston |
µg/m³ |
15.6 |
14.4 |
14.7 |
14.7 |
14.6 |
14.8 |
14.8 |
14.9 |
15 |
15.3 |
15.5 |
15.6 |
15.3 |
15.2 |
14.8 |
14.4 |
14 |
13.9 |
13.7 |
13.5 |
13.5 |
13.5 |
13.5 |
13.4 |
13.5 |
| Shoshone |
Pinehurst |
µg/m³ |
4.7 |
4.5 |
4.7 |
4.5 |
4.5 |
4.5 |
4.4 |
4.2 |
3.9 |
4 |
4.1 |
4.1 |
4.1 |
4.3 |
4.5 |
4.3 |
4.3 |
4.4 |
4.4 |
4.2 |
4.2 |
3.9 |
3.8 |
3.8 |
3.8 |
| Twin Falls |
Twin Falls |
µg/m³ |
28.2 |
28.2 |
28 |
27.7 |
27.2 |
26.8 |
26.2 |
25.4 |
24.6 |
24.1 |
23 |
22 |
20.8 |
20 |
19.5 |
19.2 |
18.8 |
18.5 |
18.4 |
18.1 |
17.8 |
17 |
16.2 |
15.5 |
14.8 |