Global Warming 2025 Facts. Carbon brief’s analysis indicates a 95% probability that this year will surpass 2023 as the warmest year on record in the copernicus/ecmwf era5 dataset. The report was issued on the first day of the un climate change conference, cop29.

According to ncei’s global annual temperature outlook, there is a 22% chance that 2025 will rank as the warmest year on record and a 99% chance that it will rank in the top five. Limit global warming to 1.5°c, struggle to adapt to 2°c, or face catastrophic consequences at 2.6°c and beyond.