Pittsburgh
 
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 | Ozone Action Program
 
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)
50 
Good
Health Message: None
Air Quality Index (AQI)
50 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
50 
Good
Ozone
45 
Good
Particles (PM2.5)
50 
Good
Ozone
50 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Thursday, partly sunny skies prevail over the region as an area of high pressure continues to build in over the Great Lakes / Ohio Valley area. This high's clockwise circulation has helped to steer our winds out of the north today, allowing a cooler and drier air mass to build in. As a result, afternoon temperatures are only reaching into the low 70s. Air quality remains low too. The air mass moving in from Canada is relatively clean so ozone and PM 2.5 levels continue to range in the good category. Expect the good air quality to continue into tomorrow as conditions stay cooler than normal and dry. *** Friday's Forecast: So for Friday, mostly sunny skies will persist over the region as the area of high pressure, which was off to our west on Thursday, will continue to push east, closer to our area. As a result, expect the winds to die down. The light winds coupled with the sunny skies should help temperatures to rise into the upper 70s. With temperatures still ranging about 5 degrees below normal, ozone will have a hard time rising out of the good range. PM 2.5 will have a hard time rising as well due to the dry conditions in place across western PA. Good air quality will result. *** Extended Outlook: Over the coming days, expect temperatures to remain near to below normal as a strong cold front presses into the region during the time period. Here is how things are shaping up... Over the weekend, we expect two frontal systems to pass through the region. First, a warm front will push through on Saturday. The warm front is likely to trigger some showers over our area as it presses from southwest to northeast across western PA. Late on Sunday (or even early on Monday), the cold front (associated with the same storm system that allowed the warm front to push in) will move through the region. As it does, more rain will fall over our area. Once it pushes off our east, expect a new area of high pressure to build over the Midwestern US and tap into an even cooler and drier air mass over Canada. As a result, temperatures will reside near 70 for a couple of days before rebounding toward the middle of the week. Expect the air quality levels to remain in the good range for much of the period expect over the weekend when the surge of warmer, more humid air causes PM 2.5 levels to rise into the moderate category. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 17:00 EDT
48
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 48 Good
Ozone 31 Good

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