Site

State

PM AQI* (ug/m3)

Birney

MT

13

Boundary County

ID

12

Lewiston

ID

12

Bozeman High School

MT

11

Kamiah-ID

ID

9

Libby Courthouse

MT

9

TRNP-NU

ND

9

Rossiter Pump House

MT

8

Billlings Lockwood

MT

8

St. Maries

ID

8