Pittsburgh
 
Data and Forecasts courtesy of:
 

 
AQI: Good (0 - 50) AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
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
 
Data and Forecasts courtesy of:
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
65 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
65 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Ozone
65 
Moderate
Particles (PM2.5)
60 
Moderate
Ozone
60 
Moderate
Particles (PM2.5)
65 
Moderate
Forecast Discussion: Current Conditions: As of 2 PM on Friday, a mix of sun and clouds prevail over the region as a cold front begins to advance through the region. Earlier today, a line of showers developed across the region. This line of showers is now making its way across central PA. Across our area, we are already beginning to feel some relief in the outside conditions as dewpoint temperatures drop into the 60s. The combination of the early day cloud cover and a drier air mass building in currently has all but limited ozone and PM 2.5 formation to levels near the good / moderate threshold. Expect air quality concentrations to remain low early as cooler temperatures build in. As temperatures rise near seasonable levels early next week, so will air quality levels. Now onto the day-to-day details... *** On Saturday, expect mostly cloudy skies to persist across the region as the frontal passage from Friday clears the region. At the same time, a new disturbance will move in from the west, likely triggering some shower activity during the afternoon. Temperatures will fall slightly from Friday's highs (with the afternoon clouds and showers limiting peak temperatures). Overall, expect readings to hover in the upper 70s. The combination of the cloud cover and rain will not only limit ozone formation to the good range but should keep the boundary layer well mixed, thus limiting PM 2.5 levels to the same fate as ozone. *** For Sunday, expect the skies to begin to clear as Saturday's disturbance pushes off to the east. With the decline of storminess over the area, expect to see higher pressure begin to make its way in across western PA. The addition of sunshine during the afternoon will allow peak temperatures to climb back into the 80s. With more sun, expect ozone to begin to rise again. PM 2.5 levels will be near Saturday's levels. Therefore, expect both ozone and PM 2.5 to stay near the good / moderate category. *** On Monday, mostly sunny skies will persist across the region as a new area of high pressure takes control of our weather. Winds will be light as well. Therefore, not only will temperatures rise into the mid 80s during the afternoon, ozone and PM 2.5 levels will be on the increase. Expect the abundant afternoon sunshine to force ozone to rise into the moderate category. Another day of light winds and warm temperatures will force PM 2.5 levels into the low moderate range as well. *** Extended Outlook: As we take a peek into next week, we notice that the week will start off on the seasonably warm side, thanks to an area of high pressure re-establishing itself along the East Coast. This high will not only force afternoon temperatures up but also air quality levels. In fact, ozone and PM 2.5 readings are expected to peak in the moderate category. By late Tuesday, a new cold front will begin to advance in from the west. This front will trigger a line of showers as it tracks off to the east. Once the front moves off to our east, expect a new area of high pressure to build in from the west. This high will make a slow eastward progression... basically becoming the dominant weather feature over our area from Thursday through the weekend. Due to the location of the front, we will see cooler, drier air to build in during the end of the week, reducing ozone and PM 2.5 levels to the good range. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 9:00 EDT
72
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.
AQI - Pollutant Details
Ozone 24 Good
Particles (PM2.5) 72 Moderate

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