Hawai`i Volcanoes National Park
Current Sulfur Dioxide (SO2) and Particulate (PM2.5) Conditions
Graphic showing the approximate location and shape of the Kilauea Summit and Pu'u 'O'o sulfur dioxide gas plumes as based on wind direction measurements.
The map above indicates the approximate direction and extent of the volcanic gas plumes (yellow wedges) from Halema'uma'u and Pu'u O'o. Within the plumes are unhealthy concentrations of sulfur dioxide (SO2) and small particles (PM2.5). Color-coded health advisories (color circles or label boxes) are issued when the plumes affect surface areas.
Warning symbol Sulfur dioxide gas plumes from volcanic vents may impact common visitor areas around the Kilauea caldera. Unhealthy to hazardous conditions may exist. Plan outdoor activities for safer areas.
Today's Advisory History
     Good Good Good Good Good Good Good Good Good Unhealthy for Sensitive Groups Good Unhealthy for Sensitive Groups Good Good Good Moderate     
12:00am 6:00am 12:00pm 6:00pm 11:45pm
History Detail -->
  Air Quality Conditions
  Sulfur Dioxide Advisory Level
   Apr 25, 2015  •  4:00 AM HST
 Good   Moderate   Unhealthy for Sensitive Groups   Unhealthy   Very Unhealthy   Hazardous 
  Particulate Advisory Level
   Apr 25, 2015  •  4:00 AM HST
More Data -->
Meaning of Advisory Colors-->
  Wind Direction
South Southwest 
  Wind Speed
1 mph ( 0.6 m/s ) 
  Apr 25, 2015  •  4:00 AM HST
More Data -->
  Additional Information
  •Summit Location
  •Volcanic Gases
  •Island of Hawai'i Air Quality
  •Jaggar Museum Camera View
  •Volcano House Camera View
  •Kilauea Status

USGS This web page is jointly supported by the National Park Service and the U.S. Geological Survey. USGS