Greenhouse gas concentrations are at record levels, says WMO. It also warns about the lesser-known ones.

The World Meteorological Organization's report reveals record levels of CO₂ and other greenhouse gases in 2025, indicating a long-term temperature rise. CO₂ concentration reached 426.8 ppm, 153% of 1750 levels, with methane and nitrous oxide also at record highs. The report emphasizes the urgency of addressing climate commitments at the upcoming COP 31 conference. The growth rate of CO₂ emissions has tripled since the 1960s, with a significant increase noted from 2024 to 2025. Additionally, lesser-known greenhouse gases like hydrogen and sulfur hexafluoride are highlighted for their impact on climate change. Monitoring these gases is crucial for understanding their effects on the atmosphere.