Site

State

PM AQI* (ug/m3)

MA

UT

12

Paul E-Sampler

ID

10

Weiser PM25

OR

9

St. Lukes Meridian

ID

9

Copper View

UT

9

Garden Valley

ID

8

Herriman #3

UT

8

Rexburg PM25

ID

7

Lindon

UT

7

Garden City

ID

7