Summary

In 2024, human-caused climate change exposed the average person to six extra weeks of dangerous heat, with some regions experiencing up to 150 more hot days.

Nearly half of countries faced at least two months of high-risk temperatures, while global heating also intensified hurricanes, typhoons, and floods.

Researchers warn unmonitored heatwave deaths are a “gross underestimate.”

They urge fossil fuel reductions, improved early warning systems, and global funding for climate adaptation to address worsening impacts as 2024 becomes the hottest year on record.