Pennsylvania
 
Data courtesy of:
 

 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
State Air Quality Resources
Air Quality Partnership of Lehigh Valley - Berks
Air Quality Partnership of the Delaware Valley
Air Quality Partnership of the Susquehanna Valley
American Lung Association (ALA) of Pennsylvania
PA Allergy & Asthma Association
Pennsylvania DEP - BAQ - Contacts
Pennsylvania DEP - BAQ - Current Air Quality Index (AQI) by Area
Pennsylvania DEP - Bureau of Air Quality (BAQ)
Pennsylvania DEP – Air Quality Forecast Home Page
Pennsylvania DEP – Home Page
Southwest PA Air Quality Partnership
Click on the city name for more detailed information.

printable summary
FORECAST CURRENT
AQI
Fri
May 22
Sat
May 23
Altoona
36 
42 
45 
Erie
38 
40 
25 
Indiana County
38 
42 
24 
Johnstown
37 
40 
56 
Lehigh Valley
39 
44 
46 
Liberty/Clairton area
36 
43 
37 
Mercer County
36 
45 
42 
Philadelphia
47 
49 
55 
Pittsburgh
39 
44 
55 
Scranton / Wilkes-Barre
37 
41 
35 
State College
36 
41 
54 
Susquehanna Valley
39 
45 
55 
Williamsport
36 
42 
22