Site

State

PM AQI* (ug/m3)

Waterbury

CT

21

MILITARY PARK

MI

20

Lancaster DW

PA

19

DETROIT-SW

MI

18

Madawaska PSB

ME

18

Harrisburg

PA

18

Carlisle

PA

17

Buffalo

NY

17

Salladasburg

PA

16

Lebanon

PA

16