Jan Chwedeńczuk

CO2 level for May

2025:

430.51 ppm

2024:

426.90 ppm

CH4 level for February

2025:

1933.97 ppb

2024:

1925.99 ppb


source:

Earth System Research Laboratory
Global Monitoring Division (NOAA)





retrieved on June 13, 2025 from::

NOAA National Centers for Environmental Information
State of the Climate: Global Climate Report for May 2025
published online June 2025

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