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Oh wow! 414.81 ppm of carbon dioxide recorded at Mauna Loa yesterday, down slightly from...
...Wednesday.
I don't keep records of daily readings; I'm limited to weeks, months and years in my files, but I'd guess this one is up there.
From Recent Daily Average Mauna Loa CO2
May 03: 414.81 ppm
May 02: Unavailable
May 01: 414.88 ppm
April 30: 414.52 ppm
April 29: Unavailable
Last Updated: May 4, 2019
Don't worry though. Be happy. I've been reading all the time, year after year, decade after decade, that so called "renewable energy" is exponentially growing exponentially on top of exponentially.