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Atmospheric Greenhouse Gases
Trends in Atmospheric Carbon Dioxide
Monthly CO2 Average  (NOAA Data Source)

August 2024:  422.99 ppm

August 2023:  419.68 ppm

Last updated: Sep 12, 2024

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History of atmospheric carbon dioxide from 800,000 years ago until the end of the most recent GLOBALVIEW+ CO2 collection

Source: NOAA Global Monitoring Laboratory

Trends in Atmospheric Methane
Global CH4 Monthly Means   (NOAA Data Source)

April 2024:  1931.91 ppb

April 2023:  1920.56 ppb

Last updated: Aug 5, 2024

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ch4_trend_all_gl 0424.png
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