Site

State

PM AQI* (ug/m3)

Billlings Lockwood

MT

16

Kamiah

ID

14

Great Falls Overlook Park

MT

13

Libby Courthouse

MT

13

Cut Bank

MT

13

Seeley Elementary School

MT

13

Columbia Falls

MT

12

Rossiter Pump House

MT

11

Pinehurst

ID

9

Lewiston

ID

9