Site

State

PM AQI* (ug/m3)

Shoshone Bannock Tribes

ID

8

St. Lukes Meridian

ID

7

Weiser PM25

OR

7

Idaho Falls / Penford

ID

6

Rose Park

UT

6

Smithfield

UT

5

Jean

NV

5

Spanish Springs

NV

4

Copper View

UT

4

Roosvelt

UT

4