The year 2025 marked the third hottest year on record globally, extending a trend of extreme heat with no expected relief in 2026, according to reports from US researchers and EU climate monitors.

• For the first time, global temperatures exceeded 1.5°C relative to pre-industrial times on average over the last three years, as reported by Copernicus Climate Change Service.
• The director of the Copernicus Climate Change Service, Carlo Buontempo, warned that a potential El Niño weather phenomenon in 2026 could make it another record-breaking year.
• US President Donald Trump announced plans to withdraw the United States, the world's second-biggest polluter, from the UN climate treaty, complicating efforts to contain global warming.