Site

State

PM AQI* (ug/m3)

PittsfieldES

MA

18

ChelmsfordNR

MA

18

Portland - Deering Oaks

ME

18

Burlington

VT

18

Haverhill

MA

17

LYNN

MA

17

Erie

PA

16

Boston-Von Hillern

MA

16

Lebanon

NH

16

Camden Spruce St

NJ

15