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)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
45 
Good
Ozone
45 
Good
Particles (PM2.5)
55 
Moderate
Ozone
45 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Friday, mostly sunny skies prevail over the region as an area of high pressure remains in control of our weather. This high, which was off to our west on Thursday, has moved in over the Mid-Atlantic. As a result, winds have died down over our area. In addition, temperatures are only rising into the mid 70s and the air mass is very dry (dewpoints are only in the mid 40s). The combination of all of these factors are helping to keep ozone and PM 2.5 levels within the good category. Expect a slight uptick in the air quality over the weekend as warm and more humid air works in. Overall, levels should peak in the moderate range prior to a frontal passage late in the weekend. Here are the day-to-day details... *** On Saturday, partly cloudy skies will persist as the area of high pressure, which was over our area on Friday, slides east of our region. At the same time, a warm front, which was over the Midwestern US on Friday, will push eastward toward western PA. The frontal system's passage (expected during the second half of the day) should trigger shower development over our area. The warmer air working in after the frontal passage should force high temperatures back into the low 80s. The combination of the warmer and more humid air mass moving in will help to drive PM 2.5 levels back into the moderate category. Ozone, on the other hand, will remain in the good range thanks to the increase in cloud cover and rain chances over our area. *** For Sunday, mostly cloudy skies will persist over the region as the warm front, which pushed through our region on Saturday, stalls near the PA / NY border. At the same time, an area of low pressure associated with the warm front passage will push east across the Ohio Valley. A cold front will follow the progression of the low pressure system through the Ohio Valley. As the frontal system comes into contact with the warm and moist conditions over our area, expect showers and thunderstorms to result. In advance of the front, winds will remain out of the southwest, allowing high temperatures to extend into the low 80s. The combination of the warm and moist conditions over the region will keep PM 2.5 levels in the low moderate range. Ozone will remain confined to the good range. *** On Monday, mostly cloudy skies early in the day will give way to some partial clearing late as a cold front passes through the region. The frontal passage will be early. Therefore, any lingering showers associated with the frontal passage are likely to only persist through the morning hours. Once the front pushes through, the winds will swing out of the northwest, allowing cooler and eventually drier air to work in. Overall, afternoon highs should only peak in the mid 70s. Air quality levels should take a hit as well. After spending much of the weekend in the moderate range, PM 2.5 levels should drop back into the good threshold as the cooler and drier works in. Ozone will once again be relegated to the good category. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 16:00 EDT
30
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 30 Good

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