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Recent Global CO2 Trend

June 12:   414.89 ppm
June 11:   414.88 ppm
June 10:   414.87 ppm
June 09:   414.87 ppm
June 08:   414.86 ppm
Last Updated: June 13, 2021
Global CO2

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The figure shows daily averaged CO2 from four GML Baseline observatories; Barrow, Alaska (in blue), Mauna Loa, Hawaii (in red), American Samoa (in green), and South Pole, Antarctica (in yellow). The thick black lines represent the average of the smoothed seasonal curves and the smoothed, de-seasonalized curves for each of the records. These lines are a very good estimate of the global average levels of CO2. Details about how the smoothed seasonal cycle and trend are calculated from the daily data are available here.