Philadelphia
 
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
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
 
Data and Forecasts courtesy of:
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
108 
Unhealthy for Sensitive Groups
Health Message: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors.
ACTION DAY
Air Quality Index (AQI)
46 
Good
Health Message: None
AQI - Pollutant Details
Ozone
108 
Unhealthy for Sensitive Groups
Particles (PM2.5)
57 
Moderate
Ozone
38 
Good
Particles (PM2.5)
46 
Good
Forecast Discussion: A few showers will pass through the Philadelphia metropolitan area in the morning giving way to party cloudy skies. Temperatures will only be able to reach the mid 80’s °F as more widespread clouds and precipitation move into the region after lunchtime. Sustained southwesterly winds and breaks in the clouds will favor ozone accumulation but periods of heavy rain and average temperatures will keep ozone well within the Good range. Particles will also lower into the upper Good range. **Extended Forecast: A cold front will push through the region early Saturday morning, ushering in a fresh, much drier and unseasonably cool air mass to the region. Heavy precipitation will move through the area before lunchtime, giving way to clearing skies and gusty winds. Despite the clearing skies, temperatures will only reach into the low 80’s °F as strong northwesterly flow brings in cool Canadian air, limiting ozone to the mid Good range. The incoming dry air mass will limit particle formation. Gusty winds will diminish by Sunday morning, with light/calm northwesterly flow. Although temperatures will be in the upper 70s °F, light/calm winds with mostly clear skies under the strong late June sun may allow ozone to creep into the low Moderate range for Sunday. Particles will remain in the Good range.

Current Conditions
Air Quality Index (AQI)
observed at 23:00 EDT
97
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
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 97 Moderate
Particles (PM2.5) 65 Moderate

Past Air Quality Maps and Data
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Air Quality Maps Archives (by region)

E-Mail Notification
 
Pennsylvania Air Quality Partnership Email