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)
80 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Ozone
60 
Moderate
Particles (PM2.5)
80 
Moderate
Ozone
55 
Moderate
Particles (PM2.5)
55 
Moderate
Forecast Discussion: This Weekend's Forecast: On Saturday, expect the skies to turn sunny as the frontal system, which produced rain over our area on Friday, moves off to our south. An area of high pressure building in over the Great Lakes will keep our flow primarily out of the west during the day. The abundant sunshine will be a factor in forcing temperatures to eclipse the 90 degree mark during the afternoon. The combination of the hot and humid conditions over the region will be enough to keep PM 2.5 levels well within the moderate range. The sunshine alone will allow ozone levels to climb. However, the source region of the air mass moving into the region during the day will keep ozone from rising out of the moderate category. *** For Sunday, sunny skies will continue to persist across the region as the area of high pressure, which was off to our north and west on Saturday, drops south and over the northeastern US. Winds, residing out of the west, coupled with the clear skies will allow afternoon temperatures to peak above 90 again. Just like on Saturday, the abundant sunshine and hot conditions should force ozone near the Code ORANGE level. The limiting factor will continue to be we are dealing with a weekend emission picture (there is no guaranteed time during the day when we see elevated emission profile, such as during the week with rush hour traffic). PM 2.5 levels will continue to thrive in this warm and moist environment and hang in the moderate category. *** On Monday, expect to see more clouds move in over the region as a new frontal system approaches from the west. As this front moves closer to our area, expect the threat of showers to increase. The increasing threat of showers and the additional cloud cover will not only limit afternoon highs to the 80s but will also allow ozone levels to drop back within the moderate category. Just like the days preceding Monday, PM 2.5 will continue to stay within the moderate range due to the heat and humidity across western PA. *** Extended Outlook: As we take a peek into next week, we notice that the temperatures will remain hot as high pressure dominates our weather. This high pressure system will be short-lived, however, thanks to a cold front advancing toward our region on Monday. This frontal system is likely to produce some showers over our area before moving off to our east. In the Tuesday to Thursday time frame, expect drier weather to reside over the region thanks to higher pressure building in. The weather will begin to become unsettled as we approach the weekend as a new storm system proceeds toward our region (from the west). Overall, air quality levels are likely to follow the level of storminess over the area. The frontal system's passage early in the week will likely force ozone and PM 2.5 levels to fall. As conditions begin to warm back up late in the week, air quality conditions are likely to rise well into the moderate range. The storminess anticipated for the weekend will likely put an end to the higher air quality levels. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 13:00 EDT
79
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 41 Good
Particles (PM2.5) 79 Moderate

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