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)
40 
Good
Health Message: None
Air Quality Index (AQI)
40 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
40 
Good
Particles (PM2.5)
40 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Wednesday, partly cloudy skies prevail over the region as a cold front advances off to our east. At the same time, an area of high pressure builds in over the Plains. The combination of these two systems is steering our flow out of the west today. The westerly flow, which is strong at times, is keeping temperatures within the 50s this afternoon. In addition, PM 2.5 levels have fallen into the good range due to the level of mixing along with the cooler and drier air building in. Expect good air quality to persist through tomorrow as the cool and dry air stays in place over our area. *** Thursday's Forecast: So for Thursday, expect partly sunny to persist over the region as higher pressure builds in briefly. This high will keep conditions fairly tranquil over our region during the day. As a result, light winds will persist. The periodic sunshine could drive temperatures into the low to mid 50s during the day. These slightly cooler than temperatures along with the dry air already in place are likely to keep PM 2.5 levels within the good threshold. *** Extended Outlook: Over the coming days, expect temperatures to remain below normal early in the period as an upper level trough settles in over the Northeastern US. This trough will feed the cold and dry air mass across western PA just as a disturbance swings along the base of the trough. This disturbance will trigger some liquid / frozen precipitation as it swings off to our south and east. Once the system passes through, expect a reinforcing shot of cool and dry air to build in (which is why temperatures over the weekend are likely to not make it out of the 40s). Air quality is expected to remain within the good threshold. A new area of high pressure, which was off to our west over the weekend, will build in over the Mid-Atlantic on Monday. By Tuesday, our winds will swing more southwesterly, allowing warmer temperatures to build in. Conditions will remain fairly dry for the first half of the week with air quality teetering the good / moderate threshold. A storm system, with origins over the southern Plains, is expected to impact our region late in the week as it progresses north and east into the Mid-Atlantic. Once the storm system pushes through, cooler and drier conditions will build back in as the winds swing out of the northwest. At the same time, PM 2.5 levels will drop back into the good category. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 13:00 EDT
52
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 52 Moderate
Ozone 11 Good

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