Science for Action

Collage of people engaged in various scientific activities, connected by white lines and dots, on a blue background.

The World Meteorological Organization celebrates 75 years as a specialized agency of the United Nations in 2025, turning science into action for the global good. The enactment of the WMO Convention on 23 March 1950 created an organization that would become the UN system’s authoritative voice on weather, climate, and water. 

Since its establishment, WMO has coordinated and leveraged the work of National Meteorological and Hydrological Services and partners around the world. It has set – and constantly raised – standards for high-quality, authoritative information and services to support decision-making in all sectors of the economy and society. 

WMO has pioneered Earth System science to save lives and livelihoods and support sustainable development and socio-economic well-being. The cumulative benefits of this translates into many billions of dollars and millions of lives saved. 

Throughout this anniversary year, WMO will highlight success stories and underline the need for continuing investment and commitment in the face of mounting global challenges and opportunities. 

Key areas include:

All life depends on a healthy planet, but the interwoven systems of the atmosphere, oceans, watercourses, land, ice cover and biosphere, which form the natural environment, are threatened by human activities. In the years ahead, WMO’s scientific leadership and coordination will therefore be more important than ever to address the growing impacts of extreme weather and climate change.  

WMO will also leverage opportunities from technological advances such as big data, cloud computing, space technology and Artificial Intelligence (AI) to build climate-smart societies. This will require commitment, resources and know-how from public, private and research sectors. 

As we celebrate the achievements of the past 75 years, we aspire to a world in which future generations can both survive and thrive on our planet.  Join us on our journey!  

History of WMO
Going back to 1873, WMO finds its roots in the International Meteorological Organization (IMO), which then was a non-governmental organization that had transformed into a specialized agency of the United Nations in 1951, to become the World Meteorological Organization, responding more effectively to the international nature of meteorology.
Warming Stripes
The climate stripes were created by Professor Ed Hawkins at the University of Reading in 2018. They show clearly and vividly how global average temperatures have risen over nearly two centuries.