Site

State

PM AQI* (ug/m3)

Datil-Gila Cliff Dwelling V...

NM

25

Unit153

MT

24

Arendtsville

PA

22

Parkgate (Eagle River)

AK

22

Garden

AK

20

Sequoia and Kings Canyon - ...

CA

19

Liberty (SAHS)

PA

19

Camden Spruce St

NJ

18

Canton

OH

18

Lawrenceville

PA

17