Current CO2 Trend

Latest monthly CO2 level in the Earth's atmosphere

Click image for most recent data. – This KC (Keeling Curve) Monthly CO2 Widget uses monthly CO2 data to chart the year-over-year trend. It updates automatically, practically in real time. To keep the readings simple and focused, seasonal variations are excluded by using only same-month measurements.

Think of this Widget as a signal of changes in planetary health that originates in the atmosphere. The signal is detected by earth-monitoring scientists measuring the atmosphere near the top of the world’s largest mountain in the middle of the world’s largest ocean.