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 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
Thu
Aug 25
Fri
Aug 26
Altoona
40 
40 
64 
Erie
40 
40 
52 
Indiana County
45 
45 
49 
Johnstown
40 
40 
44 
Lehigh Valley
55 
49 
50 
Liberty/Clairton area
48 
45 
60 
Mercer County
44 
40 
45 
Philadelphia
65 
67 
54 
Pittsburgh
55 
48 
61 
Scranton / Wilkes-Barre
47 
46 
42 
State College
44 
42 
39 
Susquehanna Valley
60 
50 
54 
Williamsport
45 
43 
41 
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.