Locator: 49727CO2.
I quit following atmospheric CO2 some years ago, but every so often I check back in to see what's going on.
This is the site I always use: Earth CO2.
The site seems to be a bit sketchier than usual. At the top, this banner:
Why they leave up "February CO2" is beyond me but that hasn't changed ... well, since February, 2024.
December Temperature? What's that all about? Obviously that's December, 2024 -- almost a year ago. This is the reason they go back to 1880 - 1920:
Considering all the coal that China is burning, I just can't get too excited about these numbers. In fact, if we're talking only 1.55°C since 1900, an increase of 1.55°C over 125 years isn't all that remarkable. Also, it appears that the number for February, 2025, was 427.09 compared with a most recent reading of 428.29 for November, 2025. I doubt that is statistically significant nor repeatable (if they were to test again).
All in all, this is really a pretty amateurish website considering the billions of dollars the sponsors are demanding from western nations
