Carbon dioxide levels hit new record; COVID impact ‘a tiny blip’, WMO says Published on November 23, 2020 Climate/Politics 1449 views Levels of carbon dioxide (CO2) in the atmosphere hit a new record of 410.5 parts per million in 2019, and are expected to keep rising this year, the World Meteorological Organization (WMO) said in its annual Greenhouse Gas Bulletin on Monday. More