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 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)
45 
Good
Health Message: None
Air Quality Index (AQI)
50 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
45 
Good
Particles (PM2.5)
50 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Thursday, partly cloudy skies prevail over the region as high pressure continues to dominate our weather. Right now, moderate northerly flow is helping to hold temperatures in the mid 60s. PM 2.5 levels continue to hover near the good / moderate threshold across the metro area. Expect air quality levels to creep up and hang near the good / moderate range tomorrow as warmer temperatures build in. *** Friday's Forecast: So for Friday, expect partly cloudy skies to persist again over the region as the area of high pressure, which was over the Great Lakes and steering the northerly flow on Thursday, shifts east and over the New England states. As a result, winds are expected to turn easterly to southeasterly. The more southerly profile of the winds will turn our afternoon temperatures up toward the low 70s. The combination of the increase in temperatures and the increase in low level moisture should help to keep PM 2.5 levels near the good / moderate threshold. *** Extended Outlook: Over the coming days, expect temperatures to remain within 5 degrees of normal as we see a more progressive pattern set up over the Northeastern US. Here is how things are shaping up... Over the weekend, expect the high pressure system, which was off to our north on Friday, to move off to our east. At the same time, a frontal system will press into the Midwestern US. The combination of these two systems will help to funnel our air out of the south. As a result, expect temperatures to reach well into the 70s and humidity levels to increase. PM 2.5 levels are also expected to rise into the moderate range. The frontal system, which was over the Midwestern US early in the period, will move through the region late Sunday. After it pushes off to our east, cooler and drier weather will build in as a new high pressure system moves in over the Midwestern US again. This high will gradually shift east. By the end of the week, we will see the high center itself over the Northeastern US. Therefore, after spending much of the early portion of the week in the good range, air quality levels are expected to increase back into the moderate range as a result of a strong stable air mass setting up over the Northeastern US. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 21:00 EDT
58
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 58 Moderate
Ozone 27 Good

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