Johnstown
 
Data courtesy of:
 

 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) 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
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
46 
Good
Health Message: None
Air Quality Index (AQI)
41 
Good
Health Message: None
AQI - Pollutant Details
Ozone
46 
Good
Ozone
41 
Good
Forecast Discussion: Very warm and humid conditions continue across the area this Wednesday afternoon. A cold front coming through the region during the morning and midday hours on Thursday will yield a couple of showers and a thunderstorm, and this will keep ozone in the upper good range. Winds will increase some later in the day Thursday, bringing in a cleaner air mass which will last into Friday. An area of high pressure will provide a mostly sunny sky with dry conditions for Friday. Despite the full sun, ozone concentrations will remain in the upper good range. A weak cold front then brings a shower or thundershower in spots Saturday afternoon. The next best chance for moderate levels of ozone will come Monday with the approach of the next cold front from the Great Lakes.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 13:00 EDT
58
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 58 Moderate
Ozone 35 Good

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