Regions worldwide may have already experienced around 90%–94% of the warming expected when the global average reaches 1.5°C above preindustrial levels, and 65%–76% of that expected at 2°C of warming. The findings, published in Nature Climate Change, suggest that regional warming in 2025 was statistically indistinguishable from the levels expected in a 1.5°C warmer world, underlining the immediate need for adaptation across all regions.