Site

State

PM AQI* (ug/m3)

Brigham City

UT

14

Weiser PM25

OR

10

Spanish Springs

NV

10

Idaho Falls / Penford

ID

9

Sparks

NV

9

Paul E-Sampler

ID

8

Rose Park

UT

8

St. Lukes Meridian

ID

7

Rexburg PM25

ID

7

Shoshone Bannock Tribes

ID

6