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)
48 
Good
Health Message: None
AQI - Pollutant Details
Ozone
44 
Good
Ozone
48 
Good
Forecast Discussion: Sunshine and a few clouds Saturday with ozone levels increasing, but probably remaining in the good range. A couple of thunderstorms will develop by Sunday afternoon, and the onset of convection should prevent moderate readings. Periods of clouds and sunshine on Labor Day with only a scattering of thunderstorms and upper good to low moderate levels of ozone. Ozone levels should decrease Tuesday with more clouds and thundershowers out ahead of a cold front. Drier air will then keep ozone levels low by the middle of next week behind the cold front.

Current Conditions
Air Quality Index (AQI)
observed at 9:00 EDT
19
Good
Health Message: None
AQI - Pollutant Details
Ozone 19 Good

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