The World Meteorological Organization is the UN's voice on weather, climate, and water resources, providing scientific insights into our atmosphere and climate behavior.

Overview WMO is the United Nations system's authoritative voice on the state and behaviour of the Earth's atmosphere, its interaction with the land and oceans, the weather and climate it produces and …

Our Mandate We advance meteorological science for a better future for all. WMO provides the framework for international cooperation to advance meteorological, climatological, hydrological, and …

5 days ago · Knowledge Hub Explore the new Knowledge Hub: the scientific core of the WMO Community. A central place for WMO Members, partners and experts to find technical information, …

3 days ago · WMO publishes the Global and Regional State of the Climate reports, the State of Climate Services reports, is involved in leadership capacity in the Global Framework for Climate Services, …

Again. Geneva, 15 November (WMO) - The abundance of heat-trapping greenhouse gases in the atmosphere once again reached a new record last year and there is no end in sight to the rising …

WMO Members work together to improve the accuracy and reliability of weather forecasts, warnings, and services to protect life and property. They also collaborate on research and development of …

WMO Bulletin The WMO Bulletin is published twice per year in Arabic, Chinese, English, French, Russian and Spanish editions. The Bulletin contains articles on various topics related to weather, …

Nov 6, 2025 · Climate change is the term used to describe changes in the state of the climate that can be identified by changes in the average and/or the variability of its properties and that persists for an …

All Activities WMO’s work involves a wide variety of activities and services, spanning from research to delivery of weather-, climate-, and water-related services.