This graphic presents the latest weekly average concentration of carbon dioxide (CO2) in the Earth's atmosphere. CO2 concentrations are measured with high-precision instruments at the Mauna Loa Observatory located 3400 metres above sea level in Hawaii. Measurements are made and reported by scientists the Global Monitoring Laboratory (GML) of the National Oceanic and Atmospheric Administration (NOAA).
CO2.Earth More weekly CO2 information: Weekly CO2 webpage
Other CO2 Data
CO2.Earth Daily CO2 Levels
CO2.Earth Monthly CO2 Levels
CO2.Earth Yearly CO2 Levels
CO2.Earth Highest-recorded CO2 levels
We acknowledge the print media outlets which publish weekly CO2 levels in their newspapers.