Here's an open-source chart of carbon dioxide levels globally: https://carbon.datahub.io https://carbon.datahub.io Data is pulled from MLO on Mauna Loa in Hawa

Here's an open-source chart of carbon dioxide levels globally: https://carbon.datahub.io https://carbon.datahub.io Data is pulled from MLO on Mauna Loa in Hawaii, the gold standard for data going back to 1958.