Site

State

PM AQI* (ug/m3)

Red Lodge

MT

17

Bismarck Residential

ND

15

Hannover

ND

14

RYDER

ND

14

Lostwood NWR

ND

13

Fargo NW

ND

12

Birney

MT

11

Beulah North

ND

11

Lake Ilo

ND

10

Broadus

MT

10