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)
52 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
38 
Good
Health Message: None
AQI - Pollutant Details
Ozone
52 
Moderate
Ozone
38 
Good
Forecast Discussion: A cold front pushing east late on Wednesday will bring an unseasonably cooler and drier air mass to the region for the remainder of the work week. Breezy northwesterly flow on Thursday ushering in a cleaner air mass, combined with a mix of sun and clouds, will limit ozone concentrations to the good range. High pressure will briefly make an appearance on Friday, but peak values should once again remain inside the good range. Unsettled weather will return this weekend, keeping good levels of ozone around into at least the middle of next week. --- Roble

Current Conditions
Air Quality Index (AQI)
observed at 15:00 EDT
42
Good
Health Message: None
AQI - Pollutant Details
Ozone 42 Good

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