Site

State

PM AQI* (ug/m3)

Brigham City

UT

9

Paul E-Sampler

ID

8

Weiser PM25

OR

7

Idaho Falls / Penford

ID

7

Rexburg PM25

ID

7

Herriman #3

UT

6

Rose Park

UT

6

St. Lukes Meridian

ID

6

Copper View

UT

6

Spanish Springs

NV

5