State College
 
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
 
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)
47 
Good
Health Message: None
Air Quality Index (AQI)
50 
Good
Health Message: None
AQI - Pollutant Details
Ozone
47 
Good
Ozone
50 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Friday, mostly cloudy skies prevail over the region as a cold front continues to advance eastward across the Commonwealth. In advance of the front, warm, moist air continues to ride northward. This air mass has caused a line of showers / thunderstorms to develop and move east across eastern PA. Right now, temperatures are ranging into the 80s. Even with temperatures that warm, it is the cloud cover that is helping to limit ozone formation to the good range today. Expect the good air quality to linger into the weekend as drier air builds in. Ozone will rebound early next week as warmer air moves in. *** Over the weekend, expect less clouds to persist as we move through the day thanks to the cold front, which pushed through on Friday, continuing to move off into the Atlantic. With sunny conditions moving in by the afternoon, temperatures will rise to near 80 and ozone will stay within upper good range. On Sunday, expect the skies to clear more as higher pressure builds in. The higher pressure will not only mean sunnier skies but also rising temperatures. This will force ozone near the good / moderate threshold. The high pressure system will stick around for Monday, giving us another day full of sunshine and warm temperatures (highs will peak in the mid 80s). Ozone will continue to rise on Monday, peaking near the good / moderate threshold again. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 14:00 EDT
36
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) 36 Good

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