Atmospheric CO2 at Mauna Loa Observatory

These graphs show carbon dioxide measurements at the Mauna Loa Observatory, Hawaii. The graphs display recent measurements as well as historical long term measurements. The related website summarizes in graphs the recent monthly CO2, the full CO2 Record, the annual Mean CO2 Growth Rate, and gives links to detailed CO2 data for this location, which is one of the most important CO2 sites in the world.

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Teaching Tips

Teaching Tips

On the website, at the bottom of the page, are data sources listed in the event that educators want to reproduce the graph or have students manipulate the data.

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