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 SO2 gas plumes from volcanic vents blowing southward. Areas along Chain of Craters Road may have unhealthy air quality. Plan outdoor activities for safer areas.
Today's Advisory History
     Good Good Good Good Good     
12:00am 6:00am 12:00pm 6:00pm 11:45pm
History Detail -->
  Air Quality Conditions
  Sulfur Dioxide Advisory Level
   Jan 31, 2015  •  1:15 AM HST
 Good   Moderate   Unhealthy for Sensitive Groups   Unhealthy   Very Unhealthy   Hazardous 
  Particulate Advisory Level
   Jan 31, 2015  •  1:15 AM HST
More Data -->
Meaning of Advisory Colors-->
  Wind Direction
West Northwest 
  Wind Speed
3 mph ( 1.4 m/s ) 
  Jan 31, 2015  •  1:15 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