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 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)
47 
Good
Health Message: None
Air Quality Index (AQI)
41 
Good
Health Message: None
AQI - Pollutant Details
Ozone
47 
Good
Ozone
41 
Good
Forecast Discussion: At 2 p.m. EDT this Monday afternoon, high pressure is slowly building into the area from the north and northwest. Drier air coming in has kept ozone down in the good range as a result. While ozone will be on the rise a little Tuesday, levels will remain in the upper good range. More clouds coming in Wednesday out ahead of a cold front will also act to trim ozone production. Thunderstorms are likely in the afternoon as well. Cooler and drier air with good air quality behind the cold front later this week.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 4:00 EDT
11
Good
Health Message: None
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.
AQI - Pollutant Details
Ozone 11 Good

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