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)
75 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
70 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
75 
Moderate
Ozone
70 
Moderate
Forecast Discussion: Heat and humidity will be on the increase over the region as we move into the midweek period. With temperatures into the middle and upper 80s along with southwesterly transport, ozone concentrations will rise into the middle moderate range Tuesday. Moderate levels of ozone will continue for the day Wednesday but a few afternoon clouds might surpress levels some. A cold front passing through early Thursday will then bring in a cleaner air mass for later on this week, lowering ozone levels back into the good range by Friday. Increases in ozone concentrations are possible again over the weekend with winds shifting back into the southwest, but levels might not rise above the moderate range due to the possibility of afternoon and evening convection.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 10:00 EDT
76
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 76 Moderate
Ozone 8 Good

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