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 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)
35 
Good
Health Message: None
Air Quality Index (AQI)
35 
Good
Health Message: None
AQI - Pollutant Details
Ozone
35 
Good
Ozone
35 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Monday, mostly cloudy skies prevail over the region as a cold front, which pushed through our area late yesterday, continue to move off to our east. The area of low pressure associated with the frontal system is still hovering over the New England region. The cyclonic rotation of this low is spinning rain showers over much of the Northeastern US. Right now, rain showers are falling over portions of our region as showers continue to push in from the northwest. Gusty winds coupled with the clouds and rain are helping to keep temperatures confined to the 60s. Needless to say, the cloud cover and rain showers are helping to confine ozone to the good category. Expect more good air quality tomorrow as temperatures remain below normal. *** Tuesday's Forecast: So for Tuesday, partly sunny skies will persist over western PA as an area of high pressure over the Midwestern US begins to take hold of the weather over our area. The frontal system which plagued the region on Sunday and Monday will now be off to our north and east. The presence of the high will not only lower the wind speeds over our area but should also keep the flow out of the northwest. The northwesterly flow will, in turn, force cooler and drier air across western PA. As a result, expect high temperatures to only creep into the 60s. The combination of the cool and dry conditions over our area (along with the origin of the air mass) will keep ozone levels well within the good threshold. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 8:00 EDT
35
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 35 Good
Ozone 6 Good

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