Mercer County
 
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)
34 
Good
Health Message: None
Air Quality Index (AQI)
38 
Good
Health Message: None
AQI - Pollutant Details
Ozone
34 
Good
Ozone
38 
Good
Forecast Discussion: At 2 p.m. EDT this Wednesday afternoon, showers and thunderstorms are affecting the area as a cold front is moving in from the west. This activity will last into the evening before there is clearing later tonight with areas of fog. Periods of clouds and sunshine with a cool breeze on Thursday. Ozone levels will be held to the good range. High pressure builds in for Friday into Saturday with seasonably pleasant air and low humidity. Air quality will remain in the good range this weekend.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 19:00 EDT
31
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 31 Good
Particles (PM2.5) 18 Good

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