75 Years of WMO 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. 

WMO Science for Action

A large, dark tornado approaches a rural road, flanked by open fields under an ominous sky.

Weather
Panoramic view of a glacier winding between rugged mountains under a blue sky with scattered clouds. Rocky foreground leads to the expansive ice flow, surrounded by green slopes and rocky peaks.

Climate
Multilevel waterfall cascading over rocky terrain surrounded by lush greenery under a clear sky.

Water
WMO Members at Work
As part of the 75th anniversary of the World Meteorological Organization, we are shining a spotlight on the people and institutions who make WMO what it is: our Members. This special Members at Work collection showcases the stories and images shared by WMO Members from every region of the world.
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Events

Constituent Body
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Genève, Switzerland

Extraordinary session of Congress in 2025 (Cg-Ext(2025))
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Switzerland

World Meteorological Day 2025 Ceremony
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.
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