Site

State

PM AQI* (ug/m3)

St. Paul-Harding H.S.

MN

20

Minneapolis-Near Road

MN

19

Minneapolis-Phillips

MN

19

TRINITY ST MARKS

MI

18

MILWAUKEE COLLEGE AVE.-NR

WI

18

MILWAUKEE SER DNR

WI

18

Blaine

MN

18

Emmetsburg, ILCC

IA

17

Eau Claire

WI

16

Apple Valley

MN

16