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
Mon
Jul 25
Tue
Jul 26
Altoona
53 
55 
64 
Erie
49 
52 
38 
Indiana County
50 
52 
46 
Johnstown
52 
55 
 
Lehigh Valley
100 
55 
87 
Liberty/Clairton area
80 
55 
63 
Mercer County
50 
44 
46 
Philadelphia
100 
77 
147 
Pittsburgh
75 
60 
63 
Scranton / Wilkes-Barre
65 
55 
50 
State College
60 
50 
 
Susquehanna Valley
97 
55 
62 
Williamsport
55 
48 
45 
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.