World · 6 d ago
Greenhouse gas concentrations hit records in 2025, the UN says
CO2 concentration, 2025
426.8 ppm
The World Meteorological Organization put the global average CO2 concentration at 426.8 parts per million in 2025, or 153 per cent of the 1750 level.
CO2 rose 2.8 ppm between 2024 and 2025, above the decade average but less than the jump of 2023-24, partly because wildfires emitted less carbon.
"A new year, a new record."
— Ko Barrett, WMO deputy secretary-general
Nov
9
Monday
Antalya, Turkey
The report comes ahead of COP31, the UN climate conference, set for Nov 9 to 20 in Antalya, Turkey.
