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)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
50 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
55 
Moderate
Ozone
40 
Good
Particles (PM2.5)
50 
Good
Ozone
40 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Friday, overcast skies prevail over the region as light showers / thundershowers begin to develop over western PA. Right now, many of the showers are off to our north and east. Light southerly flow along with the cloud cover is helping to keep temperatures within the upper 70s. The low winds along with the elevated humidity levels are helping to drive PM 2.5 levels into the moderate range. Ozone continues to remain confined to the good range. Expect this trend to continue through the early part of the weekend as more showers move into the region. As the sun makes a reappearance early next week, ozone levels are likely to rebound. Here are the day-to-day details... *** On Saturday, mostly cloudy skies will persist throughout the day as the weak frontal system, which has been over the area for the past several days, continues to lag across the region. This will focus precipitation across our area. Therefore, expect isolated showers to develop over the region. Light easterly flow will hold temperatures near the 80 degree mark. Air quality levels are expected to stay elevated due to the humidity over the region. Ozone will stay in the good range due to the cloud cover while the PM 2.5 stays in the low moderate range due to the humid conditions over the region. *** For Sunday, expect clouds to remain in place over the area during the morning hours. By the afternoon, the clouds will diminish as the frontal system, which has been near our area for the past several days, finally pushes off to our south. At the same time, a new area of high pressure will build in over the New England states. This high will keep our flow out of the southeast, allowing warmer air to move in. Overall, afternoon highs should peak in the low 80s. The combination of the sunshine and the warmer temperatures will allow ozone to rebound into the upper good range. PM 2.5 levels are expected to remain in the low moderate range as humidity levels stay elevated. *** On Monday, mostly sunny skies will persist over the region as the area of high pressure, which began to push into the New England from the north on Sunday, continues to drop south. The high will end up centering itself over New York / Massachusetts. The clockwise circulation around the high will keep our flow out of the southeast. Just like on Sunday, high temperatures are expected to range in the low 80s. Less humid air will filter in too. The additional sunshine and continual seasonable warmth will drive ozone into the low moderate range. PM 2.5 levels are also expected to stay elevated as a more modified air mass moves in over the eastern US. *** Extended Outlook: As we take a peek into next week, we notice that the week will start off on the sunny and warm side thanks to an area of high pressure parking itself over the Northeastern US. These conditions should keep ozone and PM 2.5 levels within the moderate threshold for at least a couple of days. By the middle of the week, the area of high pressure over the Northeast will begin to move eastward into the Atlantic. At the same time, a new frontal system will begin its approach on the Great Lakes / Ohio Valley. This system is slated to push through our area during the second half of the week. As it pushes through, expect another round of showers. Once it moves through, a new area of high pressure will build in and drive cooler and drier air in for the weekend. So after the first half of the week resided in the moderate range, expect good air quality to move in to end the week. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 19:00 EDT
61
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 61 Moderate
Ozone 35 Good

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