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Mauna Loa - Since The Week Starting 3/22 Through The Week Starting 6/14, We Have Been At/Above 430 ppm CO2
The only exception is the week starting May 3rd, for which data are missing.
The only outlier was the week beginning February 22nd, which was 430.17.
https://gml.noaa.gov/webdata/ccgg/trends/co2/co2_weekly_mlo.txt
It's a long file, so just Control/End to jump to this year's results.
5 replies
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= new reply since forum marked as read
K'n'R 
https://mlg.eng.cam.ac.uk/carl/climate/CO2growth
https://gml.noaa.gov/ccgg/trends/
12 Atmospheric Carbon Dioxide Growth Rate
Carl Edward Rasmussen, June 5, 2026
Carbon Dioxide growth rate: 2.63 ± 0.28 ppm/y (mean ± 2 std dev), May 2026.
Breach of Paris Agreement +1.5°C at 450 ppm CO₂ by [highlightMarch 2034 ± 16 months].
…
Carl Edward Rasmussen, June 5, 2026
Carbon Dioxide growth rate: 2.63 ± 0.28 ppm/y (mean ± 2 std dev), May 2026.
Breach of Paris Agreement +1.5°C at 450 ppm CO₂ by [highlightMarch 2034 ± 16 months].
…
https://gml.noaa.gov/ccgg/trends/