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
ACHD website | Air Quality Action Day Program | Forecast | PADEP website
 
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)
45 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
45 
Good
Ozone
40 
Good
Particles (PM2.5)
45 
Good
Ozone
45 
Good
Forecast Discussion: Starting today, ozone (along with PM 2.5) levels will be forecasted daily. Ozone will continue to be included with our air quality forecast through mid-September. Now onto your regular scheduled forecast already in progress... *** Current Conditions: As of 2 PM on Monday, overcast skies prevail over the region as a weak disturbance moves through southwestern PA. This disturbance is triggering light showers as it tracks northwest to southeast across the area. Right now, a gusty northwesterly flow is helping to keep temperatures in the mid 40s. The combination of the light showers and the cool temperatures are driving PM 2.5 and ozone levels within the good range. Expect slightly warmer conditions to persist tomorrow as the sun makes a reappearance over the area. *** Tuesday's Forecast: So for Tuesday, a mix of sun and clouds will persist across the region as an area of high pressure remains stationed off to our west. The positioning of this area of high pressure will keep our winds out of the north during the day. The northerly flow will, in turn, keep conditions cooler than normal. In fact, highs are likely to peak in the low 60s (normal are in the mid to upper 60s). The combination of the seasonably cool air and the continual influx of drier air into the region is likely to keep both ozone and PM 2.5 within the good threshold. *** Extended Outlook: Over the coming days, expect temperatures to begin to climb back toward normal levels as we see a shift in the overall weather pattern during the period. This shift will allow the upper level trough, which has been triggering the cooler than normal temperatures over the region over the last week or so, to retreat back into Canada. In fact, the overall weather pattern will turn more zonal, which will force temperatures to return to normal. Now onto the day-to-day details... On Wednesday, expect more sunshine to influence our weather as the high pressure system, which was off to our west on Tuesday, moves east and over the Northeastern US. At the same time, a storm system will track eastward across the southeastern US. As the high moves offshore later this week, expect the storm system over the southeastern US to track up along the coastline. This system combined with an upper level disturbance dropping in from the Great Lakes could trigger some shower development over our area in the Thursday / Friday time frame. Once this system moves out into the Atlantic over the weekend, expect the overall pattern to turn more zonal, resulting in warmer impulses of air moving into our area. Therefore, temperatures are expected to return to the 70s over the weekend. Overall, air quality levels are likely to follow the track of temperatures during the period. Highest concentrations are likely to occur over the upcoming weekend when the warmest temperatures are over the area (at this time, ozone and PM 2.5 are likely to extend into the moderate category). Every other day prior, air quality levels are likely to peak near the good / moderate threshold. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 15:00 EDT
39
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 39 Good
Ozone 38 Good

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

E-Mail Notification