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)
45 
Good
Health Message: None
Air Quality Index (AQI)
35 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
45 
Good
Particles (PM2.5)
35 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Thursday, mostly cloudy skies prevail over the region as a frontal system slowly moves through our region. Right now, the presence of the frontal system is triggering light rain over the region. The cloud cover and rain continues to limit temperatures to the mid 40s as the winds remain out of the northwest. The increase in wind speeds over the last few hours has begun to force PM 2.5 levels to drop. Expect this trend to continue through the day as the cold front advances east. Even better air quality will build in over western PA as cold and drier conditions build in. *** Friday's Forecast: So for Friday, mostly cloudy skies will persist over the region as the frontal system, which was impacting our area on Thursday, moves off to our east. At the same time, a new area of high pressure will push in from the west. The combination of the departing front and the incoming high will keep our winds out of the north. The northerly flow will, in turn, force colder and drier air back in across western PA. As a result, afternoon highs are likely to only peak near 40. The combination of the cold, dry and windy conditions over the region will help to drop PM 2.5 levels well within the good threshold. *** Extended Outlook: Over the coming days, expect temperatures to make a 30 degree transition as the true Spring time weather pattern continues to persist across the region. Here are how things are shaping up... Over the weekend, expect the coldest day of the next week to unfold thanks to a strong area of high pressure slowly migrating east through the Great Lakes / Ohio Valley region. This high should drop these cold temperatures into our area on Saturday. By Sunday, the real cold air over the area will migrate back to the north just as the high pressure system is settling in over the southern Mid-Atlantic region. At the same time, a new storm system will push in north of the Great Lakes region. This system is likely to track east through the Northeastern US on Monday, triggering rain showers as far south as PA. Once this system swings through, warmer, more humid conditions will begin to return. A new storm system swinging through the Great Lakes early next week will move through our area late Tuesday into Wednesday. As a result, expect cooler temperatures to build in for Wednesday. During the second half of the week, warmer air is likely to build back in as a new system (over the southeastern US) impacts our weather. Overall, air quality levels are expected to be impacted by the wild swing in temperatures during the period. The cooler than normal readings early on will keep PM 2.5 levels within the good threshold. Expect PM 2.5 levels to begin to rebound early next week as the warmer air builds in. PM 2.5 levels are likely to creep up even more late in the week as warm, moist air persist over the region. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 17:00 EDT
22
Good
Health Message: None
AQI - Pollutant Details
Ozone 22 Good
Particles (PM2.5) 9 Good

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

E-Mail Notification