Mauna Loa


ppm



ppm
week ago

ppm
year ago

ppm
10 years ago

Weekly Data




Monthly Data


vs

Annual Data


Year

average

Complete graph




The world's most current data for atmospheric CO2 is measured at the Mauna Loa Observatory in Hawaii. Measurements are made and reported independently by two scientific institutions: Scripps Institution of Oceanography and the National Oceanic and Atmospheric Administration (NOAA).


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