Site

State

PM AQI* (ug/m3)

Liberty (SAHS)

PA

12

Newark Firehouse

NJ

11

Boston-Von Hillern

MA

11

Camden Spruce St

NJ

11

Padonia

MD

11

Worcester

MA

11

Lafayette-Greenbush St

IN

10

Elizabeth Trailer

NJ

10

Boston - Roxbury

MA

10

Howard County Near Road

MD

10