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's High Tomorrow's High
Air Quality Index (AQI)
30 
Good
Health Message: None
Air Quality Index (AQI)
45 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
30 
Good
Particles (PM2.5)
45 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Friday, overcast skies as high pressure resides over the Plains dominates our weather. This high is keeping westerly flow in place over western PA, which is producing light lake effect snow showers just to our north. Right now, the strong westerly flow is keeping cold air in place as reading only register into the 20s. However, the wind is making it feel like the temperatures are in the 10s. The strong wind and cold temperatures are keeping PM 2.5 levels confined to the good range today. Expect a slight uptick in the air quality tomorrow as the dewpoint temperatures creep up slightly. Through the rest of the weekend, PM 2.5 levels should stay near the good / moderate range as a new storm system makes its way into the area. Now onto the day-to-day details... *** On Saturday, expect cloudy skies to remain in place over the area as our area of high pressure, which was off to our west on Friday, begins to slide east. This high will still keep the winds out of the west during the day. The westerly winds will allow light snow to remain as well, primarily closer to Erie. The combination of the cold and moderately windy conditions will help keep PM 2.5 levels confined to the good range. *** On Sunday, the conditions will remain cloudy as a new storm system begins to approach from the west. In advance of the storm, warmer temperatures will begin to return as our winds remain out of the south. The increasing temperatures (and moisture levels) along with the lighter winds will be enough to drive PM 2.5 levels to near the good / moderate threshold. *** For Monday, overcast skies will continue to dominate our skyline as a storm system makes its way into our region. This storm system was off to our west on Sunday. By early in the morning, rain associated with this system will begin to move into western PA. The rain will end during the afternoon, at which time cooler temperatures will begin to move in. Before then, readings will range in the low 40s. Regardless of the warmer, more humid conditions, it will be the timing of the storm's passage that will keep PM 2.5 levels closer to good / moderate threshold. *** Extended Outlook: As we take a peek into next week, we notice that the temperatures will start off cold but will be on a quick rebound as a storm system advances toward our area. The center of this storm is likely to track just to our north, allowing the warmer air to build in and the precipitation staying as rain. After the storm moves through, colder air will slowly filter in. From Tuesday to Saturday, temperatures will drop from 40 to the single digits as a shot of true arctic air dislodges from western Canada. The infiltration of this air mass from the Arctic region will be enough to keep PM 2.5 levels within the good range later in the week after levels start the week near the good / moderate threshold. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 19:00 EST
64
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 21 Good
Particles (PM2.5) 64 Moderate

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