The first year past 1.5C has come and gone. Now it is an average
2024 finished at 1.60C above pre-industrial, the first calendar year beyond the Paris marker; 2025 came in at 1.47C, and the last three years together averaged above 1.5C, another first. In treaty terms the threshold is intact. On current warming rates, it will not stay that way for long.
Sep 20, 2026 · 8 min read