Site

State

PM AQI* (ug/m3)

Fargo NW

ND

6

TRNP-NU

ND

6

Broadus

MT

5

Porthill

BC

5

Bozeman High School

MT

5

Rossiter Pump House

MT

4

Billlings Lockwood

MT

4

Birney

MT

4

Juliaetta E-sampler

ID

4

Plummer CDA Tribe

ID

4

Grangeville

ID

4