
Climate Change Doubled Extreme Heat Days in Nearly Every Country, New Report Finds
A new analysis shows that human-caused climate change made 67 extreme heat events between May 2024 and May 2025 more likely including record-shattering heatwaves in the Mediterranean, Central Asia, and South Sudan. All 67 events either broke temperature records, caused serious damage, or both.
Using the Climate Shift Index, researchers found that every country and territory experienced more extreme heat days due to climate change. In 195 countries, the number of such days has at least doubled compared to a world without global warming. Nearly 4 billion people half the world’s population faced an extra month of extreme heat over the past year.
The report, compiled by Climate Central, World Weather Attribution, and the Red Cross Climate Centre, points to a troubling global pattern. In ...