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)
44 
Good
Health Message: None
Air Quality Index (AQI)
62 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
44 
Good
Ozone
62 
Moderate
Forecast Discussion: At 2 p.m. EDT this Monday afternoon, a cold front has passed just to the south and east of the area. Drier air moving in has resulted in ozone concentrations being held in check. This supply of dry air with a northwesterly flow will last into the day Tuesday with sunshine and a few clouds. Ozone levels will remain in the good range. As the high moves to the east of us on Wednesday, winds will lighten and ozone will rise once again. A series of weather systems coming out of the Midwest later on this week will bring more clouds back, tempering ozone levels to the upper good---low moderate range.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 13:00 EDT
41
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 29 Good
Particles (PM2.5) 41 Good

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