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)
65 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
50 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
65 
Moderate
Ozone
45 
Good
Particles (PM2.5)
50 
Good
Ozone
45 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Tuesday, overcast skies prevail over the region as a cold front approaches the region. In advance of the front, showers continue to develop across eastern Ohio and western PA. The temperatures remain seasonably warm and the air is humid. Therefore, we are beginning to see PM 2.5 levels rise toward the good / moderate threshold. Ozone remains good thanks to the cloud cover. Air quality levels will drop into the good range tomorrow as a slightly cooler and less humid air mass builds in. *** Wednesday's Forecast: So for Wednesday, expect the skies to turn mostly sunny as the frontal system, which pressed through our region on Tuesday, continues to shift off to our east. At the same time, a new area of high pressure will build in over the Great Lakes and steer our flow more out of the west. This will allow cooler and drier air to build in. As a result, expect high temperatures to peak near 80. Air quality levels are expected to drop too. With less humidity, PM 2.5 levels should drop into the good range. Ozone should remain near the good / moderate threshold with the addition of sunshine during the afternoon. *** Extended Outlook: Over the coming days, expect conditions to become increasingly warm and humid as the air mass that was over the central US earlier in the week moves east into our area. This will begin in earnest on Thursday as the high pressure system, which was off to our west on Wednesday, moves east of our area. The return flow on the backside of the high will be out of the southwest, tapping into the warm and humid conditions residing over the central US. As a result, air quality levels should increase back into the moderate range. The moderate conditions will continue into the weekend. These conditions will come to an end once a new cold front presses through the region. This second frontal passage is likely to drive a more impressive September-like air mass into the region for early next week. As a result, expect the rise in air quality levels to be short-lived this week. The new air mass moving in will likely cause ozone and PM 2.5 levels to fall back into the good range. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 16:00 EDT
72
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 72 Moderate
Ozone 27 Good

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