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)
46 
Good
Health Message: None
Air Quality Index (AQI)
49 
Good
Health Message: None
AQI - Pollutant Details
Ozone
38 
Good
Particles (PM2.5)
46 
Good
Ozone
49 
Good
Particles (PM2.5)
38 
Good
Forecast Discussion: On Saturday, a few morning showers will pass giving way to a pleasant day in the Delaware Valley. Mostly cloudy skies will clear by lunchtime allowing temperatures to rise into the upper 80’s °F. Strong westerly flow will bring a much less humid air mass into the region. Mostly sunny skies and average temperatures combined with a westerly flow will allow ozone to rise to the Good/Moderate threshold for Saturday. Particles will remain well within the Good range. **Extended Forecast: A cooling trend will begin on Sunday as upper air transport will bring a cool dry air mass from southern Canada. Clear skies throughout the day and calm/light winds at the surface will allow for some ozone formation but temperatures falling into the low 80’s °F and northwesterly flow will keep ozone and particles in the Good range. Monday will be much cooler with temperatures in the mid 70’s °F. Light winds in the morning will increase in the afternoon as rain showers become more likely. Once again, clear skies will allow for ozone formation but below average temperatures will limit ozone to the upper Good range. -Enlow

Current Conditions
Air Quality Index (AQI)
observed at 19:00 EDT
47
Good
Health Message: None
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 30 Good
Particles (PM2.5) 47 Good

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

E-Mail Notification
 
Pennsylvania Air Quality Partnership Email