Liberty/Clairton area
 
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
Current Air Quality Index | Forecast
 
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)
50 
Good
Health Message: None
Air Quality Index (AQI)
50 
Good
Health Message: None
AQI - Pollutant Details
Ozone
50 
Good
Particles (PM2.5)
50 
Good
Ozone
45 
Good
Particles (PM2.5)
50 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Wednesday, partly sunny skies persist over the region as an area of high pressure continues to control our weather. Right now, southerly flow over the region is allowing temperatures to rise into the low 80s while driving dewpoints well into the 60s. As a result, ozone and PM 2.5 levels have risen closer to the good / moderate threshold. Expect air quality concentrations to hover in the upper good category as a frontal system moves through the area. *** Thursday's Forecast: So for Thursday, mostly cloudy skies will prevail over the area as a cold front advances in from the west. This front will likely triggers showers during the day, with a chance of thunderstorms late. Continual southerly flow in advance of the front will keep temperatures (with highs peaking in the mid 80s) and humidity levels elevated. As a result, expect PM 2.5 levels to stay near the good / moderate threshold. Ozone, on the other hand, will be limited thanks to the cloud cover and rain chances. *** Extended Outlook: Over the coming days, expect temperatures to remain warmer than normal as a ridge of high pressure remains established over the eastern US. The center of the ridge will be off to our south. Under this scenario, wind flow will generally remain out of the west during the period. After dropping on Friday into Saturday thanks to the passage of a cool front, expect temperatures and dewpoint temperatures to rebound early next week. Overall, it will be the ridge of high pressure that will limit storm potential over our area after the Thursday/Friday period. Therefore, this pattern should be a little more conducive for ozone and PM 2.5 formation. A bulk of the storminess should remain in place over the northern Plains / Midwestern US, which could hinder how high actual air quality levels rise. Right now, expect air quality levels to rise back into the moderate range over the weekend into early next week after falling on initially after the frontal passage. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 20:00 EDT
51
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
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 45 Good
Particles (PM2.5) 51 Moderate

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