Global heat records show 2025 among three hottest years
Scientists announced that 2025 ranked as one of the three hottest years on record and marked the first time a three-year global temperature average exceeded 1.5°C above preindustrial levels, the key threshold in the 2015 Paris Agreement. Researchers attributed most of the warming to human-driven greenhouse gas emissions, supported by global temperature records, satellite data, and climate models. They said the 2025 data will inform international climate negotiations, future scientific assessments, and policy planning as countries track progress toward agreed temperature limits and evaluate emissions reduction strategies.