• Mauna Loa
    Photograph by Forrest Mims III
  • John Chin and Dave Keeling
    Photograph by Forrest Mims III
  • Lidar
    Photograph by Forrest Mims III
  • Road to Mauna Loa
    Photograph by Darryl Kuniyuki
  • Water Vapor Balloon Flight
    Photograph by Forrest Mims III
  • Sun Sensor
    Photograph by Forrest Mims III
  • Mauna Loa Sunset
    Photograph by Forrest Mims III
  • Tower
    Photograph by Forrest Mims III

Mauna Loa Observatory (MLO) is a premier atmospheric research facility that has been continuously monitoring and collecting data related to atmospheric change since the 1950's. The undisturbed air, remote location, and minimal influences of vegetation and human activity at MLO are ideal for monitoring constituents in the atmosphere that can cause climate change. The observatory is part of the National Oceanic and Atmospheric Administration (NOAA) - Earth System Research Laboratory (ESRL) - Global Monitoring Division (GMD).

Current Weather Live Cameras News Items

Latest News

Carbon dioxide levels hit record peak in May
June 4, 2019

Carbon dioxide levels hit record peak in May

Atmospheric carbon dioxide continued its rapid rise in 2019, with the average for May peaking at 414.7 parts per million at NOAA’s Mauna Loa Atmospheric Baseline Observatory, scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego announced today.
Global carbon dioxide growth in 2018 reached 4th highest on record
March 22, 2019

Global carbon dioxide growth in 2018 reached 4th highest on record

By the end of 2018, NOAA’s atmospheric observatory at Mauna Loa recorded the fourth-highest annual growth in the concentration of atmospheric carbon dioxide (CO2) in 60 years of record-keeping.
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Examples of Data:
MLO CO2
CO2
MLO Solar Transmission
Apparent Solar Transmission
Water Vapor Profile
Water Vapor Profile
Meteorology Wind Rose for Mauna Loa
Meteorology

Location

  • Country: United States Country Flag
  • Latitude: 19.5362° North
  • Longitude: 155.5763° West
  • Elevation: 3397.00 masl
  • Time Zone: Local Time + 10 hour(s) = UTC

Contact

  • Contact Name: Darryl Kuniyuki
  • Address: NOAA - Mauna Loa Observatory
    1437 Kilauea Ave. #102
    Hilo, Hawaii, 96720, United States
  • Phone: (808)933-6965
  • Fax: (808)933-6967

Data

Additional Information