Site

State

AQI*

Copper View

UT

32

Brigham City

UT

28

Sunrise Acres

NV

26

Smithfield

UT

24

Ogden #2

UT

23

Hawthorne

UT

23

Rose Park

UT

22

Herriman #3

UT

22

Jerome Mack

NV

21

Salmon PM2.5

ID

21