Site

State

PM AQI* (ug/m3)

Roosvelt

UT

22

Vernal #4

UT

19

Salmon PM2.5

ID

13

Idaho City

ID

9

Shoshone Bannock Tribes

ID

9

Brigham City

UT

8

Smithfield

UT

8

Idaho Falls / Penford

ID

6

Ogden #2

UT

6

Nampa Fire Station

ID

6