Current Ppm Of Co2 In Atmosphere 2024 Season. Observed concentrations of carbon dioxide (co2) in the atmosphere have exceeded 416 parts per million (ppm) threshold at the end of 2021. Note the colors change as the amount of co 2 rises from 365 parts per million (ppm) in 2002 to over.
November 20, 2024 hourly (red circles) and daily (yellow circles) averaged co 2 values from mauna loa, hawaii for the last 31 days. Co 2 measurements sending ominous signs