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)
45 
Good
Health Message: None
Air Quality Index (AQI)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
45 
Good
Particles (PM2.5)
55 
Moderate
Forecast Discussion: Current Conditions: As of 2 PM on Friday, mostly cloudy skies prevail over the region as light snow continues to fall over western PA. It is the wind though that is providing the most heartache right now. The combination of the strong winds and cloudy skies are not only keeping temperatures confined to the upper 10s but are helping to hold PM 2.5 levels within the good threshold. Expect conditions over the weekend to be primarily in the good range. However, we could see a spike during the early morning on Sunday as more moisture and warmer temperatures move into the region. Here are the day-to-day details... *** On Saturday, partly sunny conditions will persist as an area of high pressure, which was over the Midwestern US on Friday, moves east and over our area. The movement of the high to the east will allow our winds to die down during the day while also forcing the winds to turn more out of the southwest. As a result, temperatures will rise back into the mid 20s by afternoon. It will be the moderate wind flow along with the cold and dry conditions over the area that ends up keeping PM 2.5 confined to the good threshold. *** For Sunday, the skies will turn mostly cloudy as a storm system, which was beginning to take shape over the central Plains on Saturday, moves east through the Midwestern US and Ohio Valley region. As the precipitation moves east along with the storm system, expect temperatures to remain cold enough to support snow. In fact, the NWS Pittsburgh office (as of Friday) has issued a Winter Storm Watch from Sunday at 4 AM until Monday at 12 PM. The combination of the increase in moisture (associated with storm) and the moderation of temperatures (closer to freezing) will help to drive PM 2.5 levels back into the lower moderate category. *** On Monday, mostly cloudy skies will continue to prevail over the region as the storm system begins to move east of our area. Snow is likely to continue through the early morning hours. However, snowfall will end by late morning as the main system begins to move offshore. Overall, afternoon temperatures will dip to near 20 as the winds turn northwesterly and drive a cooler and drier air mass into the region. In fact, winds should also pick up in intensity (remember the winds on Friday... this will be similar). Therefore, it is the combination to these three factors (cold, dry and windy conditions) that will keep PM 2.5 levels from rising out of the good range. *** Extended Outlook: As we take a peek into next week, we notice that the week will start off on the cool side as a storm system moves through the region. Temperatures will really take a dive on Monday as a new area of high pressure (and its northwesterly wind flow) moves into our west. As the high moves over our area on Tuesday, expect some moderation in temperatures as the winds die down and the sun reappears. Temperatures will warm further on Wednesday as our high pressure system moves east of our area. A new clipper system will swing through the Northeastern US on Wednesday, providing a slight chance of snow before driving a reinforcing shot of cold and dry air into the region to end the work week. Overall, air quality levels are expected to be at their peak in the Tuesday / Wednesday time frame as the warmest temperature reside over the region. Otherwise, it will be the cold, dry and windy conditions that keep PM 2.5 levels from rising out of the good range. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 18:00 EST
53
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 53 Moderate
Ozone 29 Good

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

E-Mail Notification