UN Weather Agency Confirms 2015–2025 As Hottest Decade On Record

UN Weather Agency Confirms 2015–2025 as Hottest Decade on Record The United Nations weather agency has confirmed that the period from 2015 to 2025 represents the hottest decade ever recorded, warning that the Earth is edging dangerously close to breaching the critical 1.5°C global warming threshold.The findings, released by the World Meteorological Organization (WMO), highlight an accelerating climate crisis driven largely by human activity, including the burning of fossil fuels and deforestation. According to the report, every year between 2015 and 2025 ranks among the hottest since modern temperature records began more than 170 years ago. The UN agency noted that 2025 itself was among the top three warmest years ever recorded globally, continuing a sustained pattern of rising temperatures The report warns that global temperatures are rapidly approaching the 1.5°C limit above pre-industrial levels a key benchmark set under the Paris Climate Agreement to avoid the worst impacts of climate change.

Data shows that recent global temperatures have already hovered around 1.4°C above pre-industrial levels, with some shorter-term periods temporarily exceeding the 1.5°C mark. Experts caution that breaching this threshold, even temporarily, could lead to more intense heatwaves, floods, droughts, and other extreme weather events. The WMO report highlights that more than 90% of excess heat generated by global warming is being absorbed by the oceans, which have reached record-high heat levels. This imbalance is contributing to rising sea levels, disruption of marine ecosystems, and increasingly unpredictable weather patterns worldwide. Scientists attribute the warming trend primarily to greenhouse gas emissions from human activities, particularly fossil fuel use and land-use changes.

The UN Secretary-General has described the findings as a “red alert” for humanity, urging governments to take urgent and decisive action to reduce emissions and transition to cleaner energy sourcess The report warns that the continued rise in global temperatures is already impacting food security, water resources, and public health. Climate-related disasters including wildfires, storms, and flooding are becoming more frequent and severe, with significant economic and humanitarian consequences The World Meteorological Organization, the UN’s leading authority on weather and climate, compiles global temperature data from multiple international datasets to provide a comprehensive assessment of climate trends. The confirmation of the hottest decade on record adds to mounting scientific evidence that the planet is experiencing rapid and unprecedented warming, intensifying calls for immediate global climate action.