Site

State

PM AQI* (ug/m3)

Cottonwood E-sampler

ID

55

Grangeville

ID

20

Nezperce

ID

13

Lewiston

ID

11

Broadus

MT

11

Libby Courthouse

MT

11

Reubens

ID

11

Seeley Elementary School

MT

10

Bozeman High School

MT

9

Yellowstone- Old Faithful S...

WY

8