The increase from 2023 to 2024 was the largest from one year to another since the measurements were introduced in 1957, according to the UN agency.
All three of the largest greenhouse gases – carbon dioxide, methane and nitrous oxide – reached new record levels during the year, according to WMO.
The organization expresses "strong concern" that the planet's ability to absorb greenhouse gases is disappearing.
The heat trapped by carbon dioxide and other greenhouse gases gives a turbo effect on the climate and leads to even more extreme weather," says WMO's vice president Ko Barrett in a statement.
Sweden's emissions of greenhouse gases increased by 7 percent in 2024, according to the Environmental Protection Agency.
From November 10-21 in the Brazilian Belém, the world's countries will meet for the climate meeting COP30 to, among other things, discuss emissions.
There are several gases in the atmosphere that contribute to the greenhouse effect.
Carbon dioxide is the most important of them that humans contribute to. The amount of carbon dioxide in the atmosphere continues to rise. In 2024, the level of 424 millionths (ppm) was reached. This is 3.5 ppm more than in 2023 and 152 percent of the pre-industrial level.
Carbon dioxide levels have not been so high in at least two million years.
The levels of the greenhouse gases methane and nitrous oxide also reached record levels in 2024. Methane reached 1,942 billionths and nitrous oxide 338 billionths. The concentrations of those gases have not been so high in 800,000 years.
