Williamsport
 
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
 
Local Air Quality Resources
 
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
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
44 
Good
Health Message: None
Air Quality Index (AQI)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
44 
Good
Ozone
55 
Moderate
Forecast Discussion: Ozone concentrations remain on the low side this Wednesday afternoon as plenty of clouds and a few showers prevail in the region. Clouds will yield to sunshine by later in the morning Thursday. While ozone will be higher, it will remain in the upper good range. More moderate ozone is likely for Friday into Saturday with very light south winds. A concentration decrease will occur Sunday night into Monday as a cold front approaches with a couple of showers and a thunderstorm.--McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 5:00 EDT
6
Good
Health Message: None
AQI - Pollutant Details
Ozone 6 Good

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)