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)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
40 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
55 
Moderate
Ozone
40 
Good
Particles (PM2.5)
40 
Good
Ozone
40 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Tuesday, mostly cloudy skies prevail over the region as we remain on the periphery of an area of high pressure centered over the western Atlantic Ocean. Right now, southerly flow across the region is keeping temperatures in the low 70s today. The cloud cover is helping to limit ozone formation to the good range while the seasonably warm and humid conditions over the region are keeping PM 2.5 levels elevated in the moderate range. Expect conditions to unfold similarly tomorrow. *** Wednesday's Forecast: So for Wednesday, expect mostly cloudy skies to continue to persist across much of western PA as we remain sandwiched between an area of high pressure in the Atlantic and a stalled out frontal system across the western Ohio Valley. As a result, expect our flow to remain out of the south, as we continue to funnel in warm and moist conditions across the region. So as afternoon temperatures approach the low 80s, the threat of showers will increase. The cloud cover and afternoon chance of rain will once again limit ozone formation to the good category whereas the warm and humid conditions keep PM 2.5 levels from falling out of the moderate category. *** Extended Outlook: Over the coming days, expect temperatures to remain seasonably warm early on as southwesterly flow remains in place across the area. By Thursday, the front, which was over the western Ohio Valley earlier in the week, will finally move through our area. This will lead to some partial cooling toward the end of the week before the ridge of high pressure tries to become reestablished across the eastern US as we head into the weekend. A second frontal system will move through the region over the weekend. As it does, expect a new round of rain to move through before a new area of high pressure builds in and provides cooler and drier weather to start off the new work week. Overall, air quality levels during the period are expected to remain within the moderate category early on (thanks to the PM 2.5's ability to thrive in warm and moist environments). Once the first front moves through, levels will likely drop closer to the good / moderate threshold. Levels will rebound back to the moderate range over the weekend as the temperatures rebound with the ridge of high pressure moving in. The second frontal system (on Sunday) will drop temperatures and dewpoints as we head into the new work week, reducing air quality levels to good / moderate range. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 11:00 EDT
30
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 30 Good
Ozone 24 Good

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