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)
45 
Good
Health Message: None
Air Quality Index (AQI)
74 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
45 
Good
Ozone
74 
Moderate
Forecast Discussion: Heat and humidity continue to build across the area this Tuesday afternoon as ozone remains in the upper good range. With the heat still on Wednesday and light south winds, ozone formation could yield readings in the middle moderate range. Highs will move into the lower 90s. A cold front moving in Thursday will bring thunderstorm activity in the afternoon and evening hours, and this will disrupt ozone formation to the lower moderate range. Low levels of ozone are forecast for Friday with a cleaner air mass moving in on west to northwest winds. Over the weekend, it should be seasonably warm with some sunshine, and overall ozone values in the upper good to lower moderate range.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 20:00 EDT
25
Good
Health Message: None
AQI - Pollutant Details
Ozone 25 Good

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