Site

State

PM AQI* (ug/m3)

Spanish Fork

UT

11

Hawthorne

UT

10

Roosvelt

UT

9

Sunrise Acres

NV

8

Paul E-Sampler

ID

8

Rose Park

UT

8

Copper View

UT

8

Nampa Fire Station

ID

8

Spanish Springs

NV

7

St. Lukes Meridian

ID

7