424.47 parts per million (ppm) CO2 in air 2-June-2023.

424.54 parts per million (ppm) CO2 in air 3-June-2023. keelingcurve.ucsd.edu

424.58 parts per million (ppm) CO2 in air 4-June-2023. keelingcurve.ucsd.edu

424.36 parts per million (ppm) CO2 in air 6-June-2023. keelingcurve.ucsd.edu

423.67 parts per million (ppm) CO2 in air 8-June-2023. keelingcurve.ucsd.edu

424.16 parts per million (ppm) CO2 in air 9-June-2023. keelingcurve.ucsd.edu

423.98 parts per million (ppm) CO2 in air 10-June-2023. keelingcurve.ucsd.edu

422.52 parts per million (ppm) CO2 in air 17-June-2023. keelingcurve.ucsd.edu

423.55 parts per million (ppm) CO2 in air 19-June-2023. keelingcurve.ucsd.edu

423.08 parts per million (ppm) CO2 in air 20-June-2023. keelingcurve.ucsd.edu

422.93 parts per million (ppm) CO2 in air 24-June-2023. keelingcurve.ucsd.edu

422.55 parts per million (ppm) CO2 in air 25-June-2023. keelingcurve.ucsd.edu

421.39 parts per million (ppm) CO2 in air 26-June-2023. keelingcurve.ucsd.edu

Baseline reading not available, data too variable 28-June-2023. keelingcurve.ucsd.edu

422.85 parts per million (ppm) CO2 in air 29-June-2023. keelingcurve.ucsd.edu

422.87 parts per million (ppm) CO2 in air 30-June-2023. keelingcurve.ucsd.edu

Baseline reading not available, data too variable 1-July-2023. keelingcurve.ucsd.edu

422.14 parts per million (ppm) CO2 in air 8-July-2023. keelingcurve.ucsd.edu

422.37 parts per million (ppm) CO2 in air 9-July-2023. keelingcurve.ucsd.edu

422.47 parts per million (ppm) CO2 in air 10-July-2023. keelingcurve.ucsd.edu