Hawai‘i Volcanoes National Park

Current Air Quality

» Click on the map circles to explore air quality at each of the nine park monitoring locations.

Jaggar Museum
Sulfur Dioxide (SO2)
Particulate Matter (PM2.5)
Kīlauea Visitor Center
Sulfur Dioxide (SO2)
Kīlauea Visitor Center Parking Lot
Sulfur Dioxide (SO2)
Particulate Matter (PM2.5)
Devastation Trailhead
Sulfur Dioxide (SO2)
Kealakomo Overlook
Sulfur Dioxide (SO2)
End of Chain of Craters Road
Sulfur Dioxide (SO2)
Steam Vents
Sulfur Dioxide (SO2)
Nāmakanipaio Campground
Sulfur Dioxide (SO2)
Thurston Lava Tube
Sulfur Dioxide (SO2)
map

Data Disclaimer

Air quality and weather data are typically displayed on this web page within 15 minutes (1 hour for Jaggar Museum and Kīlauea Visitor Center Parking Lot PM2.5) of their collection. As a result, data quality is not guaranteed for scientific and regulatory purposes and data may be revised at a later time.

Air quality health advisory levels

Recommended Action/Activity1
Color Code
& Air Quality Condition
Air Quality Description Sensitive Groups2 People Experiencing Health Effects2 Everyone Else
 
Green (Good) Considered satisfactory & poses little or no risk Highly sensitive individuals may be affected at these levels   Potential health effects not expected
 
Yellow (Moderate) Acceptable, however, may be moderate health concern for small number of people Be aware that levels are slightly elevated If you experience breathing difficulties, such as chest tightness or wheezing, stop activities, use a rescue inhaler and find a place to sit down and rest. Potential health effects not expected, however actions to reduce exposure to vog may be useful
 
Orange (Unhealthy for Sensitive Groups) Members in sensitive groups, including healthy individuals with mild asthma, may experience health effects. They may be affected at lower levels than general public. Toward the upper end of this range, most asthmatics who are active outdoors are likely to experience some breathing difficulties. General public not expected to be affected in this range. Avoid outdoor activities that cause heavy breathing or breathing through the mouth3 If you experience breathing difficulties, such as chest tightness or wheezing, stop activities, use a rescue inhaler and find a place to sit down and rest. Potential health effects not
expected, however actions to
reduce exposure to vog may
be useful
 
Red (Unhealthy) Everyone may begin to experience health effects. Members of sensitive groups may experience more serious health effects. Avoid outdoor activities & remain indoors Consider leaving the area Avoid outdoor activities that cause heavy breathing or breathing through the mouth4
 
Purple
(Very Unhealthy)
Triggers health alert, meaning everyone may experience more serious health effects. Avoid outdoor activities & remain indoors Leave the area & seek medical help Avoid outdoor activities & remain indoors
 
Maroon (Hazardous) Triggers health warnings of emergency conditions. Entire population is more likely to be affected. Avoid outdoor activities & remain indoors. Leave the area if directed by Civil Defense Leave the area &
seek medical help
Avoid outdoor activities & remain indoors. Leave the area if directed by Civil Defense
  • Asthmatics & persons with chronic respiratory disease: ALWAYS have your medications available. Reducing your exertion level so that you can breathe through your nose will reduce the amount of sulfur dioxide and particulate matter that reaches your lungs.
  • People experiencing health effects: Contact your doctor as soon as possible if any problems develop, as respiratory conditions might worsen rapidly in heavy sulfur dioxide, particulate matter, or vog conditions.
  • People have different sensitivities to sulfur dioxide and/or particulate matter. Use this table to learn how sensitive you are, so that you can develop appropriate measures to protect your health and avoid serious responses.
  1. Susceptible individuals may develop symptoms at or below the Warning limits
  2. Sensitive Groups = children and individuals with pre-existing respiratory conditions such as asthma, bronchitis, emphysema, lung or heart disease. Note: Some people with mild asthma may not be aware of it. If you have breathing difficulties at low levels of sulfur dioxide or particulate matter, check with your healthcare provider.
  3. People react differently to sulfur dioxide and particulate mater – some are more sensitive. The nasal passages can remove a lot of sulfur dioxide before it gets to the lungs. For many people simply reducing activity levels enough so that they can breathe through the nose will permit them to be outdoors without symptoms.

Advisory Scale:

  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Air Quality Health Advisory Levels

Air quality at Kīlauea is affected by volcanic sulfur dioxide gas (SO2) and particulate matter (PM2.5). Unhealthy levels of these pollutants can occur within the park. People with pre-existing respiratory conditions are especially sensitive to poor air quality.

The map indicates the approximate direction of the volcanic gas plumes (gray wedges) from Halema‘uma‘u and Pu‘u ‘Ō‘ō. Colored circles show the current air quality conditions for sulfur dioxide and particulate matter at each monitoring site.

Meaning of Advisory Colors »
Sulfur Dioxide Health Effects »
Particulate Matter Health Effects »

Wind from the

Temperature

Humidity

Park Wide Summary

Air quality health advisory levels shown in the charts below reflect the highest sulfur dioxide or particulate matter levels in the park.

Advisory Level

Air Quality
  • Hazardous
  • Very Unhealthy
  • Unhealthy
  • Unhealthy for Sensitive Groups
  • Moderate
  • Good

Sulfur Dioxide (SO2)


Particulate Matter (PM2.5)

Advisory History

  • Hazardous
  • Very Unhealthy
  • Unhealthy
  • Unhealthy for
    Sensitive Groups
  • Moderate
  • Good
graph boundary
graph boundary

« Scroll to move back in time »
Advisory History by Site »

SO2 recorded every 15 minutes, PM2.5 recorded hourly.