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
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)
70 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
75 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
70 
Moderate
Ozone
50 
Good
Particles (PM2.5)
75 
Moderate
Ozone
60 
Moderate
Forecast Discussion: Current Conditions: As of 2 PM on Tuesday, mostly cloudy skies prevail over the region as a frontal system drops across Pennsylvania. Right now, it remains dry after a cluster of storms moved through the region earlier this morning. With winds persisting out of the west, temperatures have climbed nicely through the 60s. The combination of the seasonably warm temperatures and the increased moisture levels over the area (dewpoints are in the upper 50s) are helping to keep PM 2.5 levels within the moderate range. Ozone is limited due to the cloud cover, resulting in concentrations only rising into the good category. Expect the moderate air quality levels to persist through tomorrow as conditions remain warm and moist. *** Wednesday's Forecast: So for Wednesday, expect mostly cloudy skies to persist across western PA as the frontal system, which moved south of our area on Tuesday as a cold front, jogs back off to our north as a warm front. As it does, expect the threat of showers to increase. Winds will turn out of the west during the afternoon, allowing temperatures to return to the mid 70s. The combination of the warmth and elevated humidity levels will hold PM 2.5 levels within the moderate threshold. The cloud cover and chances of rain during the day will hold ozone in the good range for one more day. *** Extended Outlook: Over the coming days, expect temperatures to remain in the "warmer than normal" category as higher pressure generally remains in control of our weather. Here is how things are shaping up... On Thursday, expect mostly sunny skies to persist over the region as high pressure builds back into the region. At the same time, a storm system off the Southeastern US coastline will continue to slowly rotate back toward the coast. This system will impact the southern Mid-Atlantic as we head toward the weekend. Over our area, we will continue to see sunny skies as Saturday approaches. Late in the weekend, we will see more clouds move in over the area as the moisture from the storm system over the Southeastern US combines with an approaching frontal system over the Northeastern US. Therefore, we are likely to see a chance of showers on Sunday into Tuesday / Wednesday as the storm system to our west moves closer to our area. Overall, air quality levels during the time period will remain a function of the temperatures / cloud cover. Early on, with sunshine the dominant figure in the sky, ozone and PM 2.5 levels are likely to be in the moderate range. PM 2.5 levels will likely peak in the Friday / Saturday time frame as a result of warm and moist conditions over the region and the subsidence along the outer periphery of the storm system over the Southeastern US. PM 2.5 levels will likely stay in the moderate range as we roll into next week, with ozone falling back into the good category with the increase of clouds and rain chances. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 4:00 EDT
98
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 98 Moderate
Ozone 22 Good

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