The report found that climate change intensified 26 of the 29 weather events studied that killed at least 3,700 people and displaced millions.
ADVERTISEMENTThe world experienced an average of 41 extra days of dangerous heat in 2024 due to human-caused warming, new analysis has found. The report by World Weather Attribution (WWA) and Climate Central reviews a year of extreme weather and warns that every country needs to prepare for rising climate risks to minimise deaths and damages in 2025 and beyond. It also highlights that a much faster transition away from fossil fuels is needed to “avoid a future of relentless heatwaves, drought, wildfires, storms and floods”. The report also found that climate change intensified 26 of the 29 weather events studied that killed at least 3,700 people and displaced millions. “The impacts of fossil fuel warming have never been clearer or more devastating than in 2024,” says Dr Friederike Otto, lead of WWA and Senior Lecturer in Climate Science at Imperial College London. “We know exactly what we need to do to stop things from getting worse: stop burning fossil fuels. The top resolution for 2025 must be transitioning away from fossil fuels, which will make the world a safer and more stable place.”Millions of people were exposed to dangerous heat in 2024This year is set to be the hottest on record – the first six months saw record-breaking temperatures, extending the streak that started in 2023 to 13 months, with the world’s hottest day in history recorded on July 22. Globally, there were 41 extra days of dangerous heat in 2024 due to human-caused warming, the scientists found.These days represent the top 10 per cent of warmest temperatures from 1991-2020 for locations around the world. The result highlights how climate change is exposing millions more people to dangerous temperatures for longer periods of the year as fossil fuel emissions heat the climate. “Extreme weather killed thousands of people, forced millions from their homes this year and caused unrelenting suffering,” says Otto. If the world does not rapidly transition away from oil, gas and coal, the number of dangerous heat days will continue to increase each year and threaten public health, the scientists say. Human-induced warming is triggering extreme weather eventsThe heat also fueled heatwaves, droughts, fire weather, storms and heavy rainfall, causing floods throughout the year. In total, 219 events met World Weather Attribution’s trigger criteria used to identify the most impactful weather events. The team of scientists studied 29 of these events and found clear evidence of climate change in 26. The floods in Sudan, Nigeria, Niger, Cameroon, and Chad were the deadliest event studied by the group, with at least 2,000 people killed and millions displaced. ADVERTISEMENTIf warming reaches 2°C, which could happen as early as the 2040s or 2050s, the regions could experience similar periods of heavy rainfall every year, the study fo