Site

State

PM AQI* (ug/m3)

Weiser PM25

OR

7

Spanish Fork

UT

7

Rexburg PM25

ID

6

Rose Park

UT

5

McCall

ID

5

Toll

NV

5

Lindon

UT

5

Soda Springs PM25

ID

4

Spanish Springs

NV

4

Garden City

ID

4