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)
40 
Good
Health Message: None
Air Quality Index (AQI)
45 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
40 
Good
Ozone
40 
Good
Particles (PM2.5)
45 
Good
Ozone
45 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Wednesday, mostly cloudy skies prevail across the region as the showers that pushed through earlier this morning continue to move well off to our east. Right now, southwesterly flow is helping to keep dewpoints elevated in the 50s and temperatures in the upper 70s. The stronger winds today has created enough mixing within the boundary layer to limit PM 2.5 concentrations to the good range. Expect good air quality to persist into tomorrow as more rain moves in over the area. *** Thursday's Forecast: So for Thursday, mostly cloudy skies early will give way to partly cloudy skies late as a frontal system makes its way through the region. This front is likely to trigger some showers early on before passing through the region. On the backside of the front, slightly cooler and drier air will build in. In fact, afternoon highs will peak near 80. The combination of the near normal highs and the winds swinging out of the north during the afternoon, expect PM 2.5 levels to remain in the upper good range. The cloud cover during the day will limit ozone formation to the good range as well. *** Extended Outlook: Over the coming days, expect temperatures to remain near normal early in the period as the flow remains southerly and the more persistent humid air mass remains in place. This air mass will take a sudden swing over the weekend once a cold front advances through the region. In advance of the front, expect the warm and moist air already over our area to trigger shower development. Once the front moves through, an area of high pressure will build in over eastern Canada, which, in turn, will allow cooler and drier air to build in to start the new work week. Overall, air quality levels during the period are generally expected to stay near the good / moderate threshold early on, thanks to PM 2.5's ability to thrive in warm and moist environments. Once the cooler and drier weather moves in to open up next week, ozone and PM 2.5 levels will hard pressed to rise out of the good category. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 9:00 EDT
51
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 51 Moderate
Ozone 27 Good

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