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)
56 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
45 
Good
Health Message: None
AQI - Pollutant Details
Ozone
56 
Moderate
Ozone
45 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Monday, mostly sunny skies prevail over the region as high pressure remains in control of the weather. The high pressure system, which is centered just east of the Carolina coastline, is steering our flow out of the southwest today. While dewpoints remain rather low (in the 40s), temperatures have been able to climb nicely (into the upper 70s to near 80). The combination of the warm temperatures and the sunny skies have forced ozone levels into the moderate range today. With more cloud cover expected tomorrow, expect ozone concentrations to drop into the good range. *** Tuesday's Forecast: So for Tuesday, expect the skies to turn mostly cloudy as a cold front advances in from the north. As the front comes into contact with the warm temperatures across the region, expect showers to develop along the front. The showers will mover southward as the front jogs that way during the day. Winds will continue to be out of the west in advance of the front, forcing temperatures to continue to range in the 70s. It is the cloud cover and afternoon rain showers that will limit ozone formation ot the good range. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 15:00 EDT
47
Good
Health Message: None
AQI - Pollutant Details
Ozone 47 Good

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