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A specialized agency of the United Nations whose mandate covers weather, climate and water resources. The UN’s scientific voice on the state and behaviour of our atmosphere and climate.

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By acting now, investing, and innovating together, we can fulfill the promise of Early Warnings for All.

Prof. Celeste Saulo, WMO Secretary-General

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In focus

World Meteorological Day 2025

](/site/world-meteorological-day-2025)

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Topic

Tropical cyclone

](/topics/tropical-cyclone)

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Publication

State of the Global Climate 2024

](/publication-series/state-of-global-climate-2024)

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Topic

Glaciers and Ice Caps

](/topics/glaciers-and-ice-caps)

Latest news

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](/media/news/typhoon-committee-showcase-regional-collaboration)

21 February 2025

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Typhoon Committee is a showcase for regional collaboration

](/media/news/typhoon-committee-showcase-regional-collaboration)

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](/media/news/green-climate-fund-grants-boost-early-warnings-all)

20 February 2025

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Green Climate Fund grants boost Early Warnings for All

](/media/news/green-climate-fund-grants-boost-early-warnings-all)

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](/media/news/glacier-melt-will-unleash-avalanche-of-cascading-impacts)

21 March 2025

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Glacier melt will unleash avalanche of cascading impacts

](/media/news/glacier-melt-will-unleash-avalanche-of-cascading-impacts)

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](/media/news/wmo-report-documents-spiralling-weather-and-climate-impacts)

19 March 2025

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WMO report documents spiralling weather and climate impacts

](/media/news/wmo-report-documents-spiralling-weather-and-climate-impacts)

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](/media/news/international-womens-day-rallying-call-action)

08 March 2025

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International Women’s Day is a rallying call for action

](/media/news/international-womens-day-rallying-call-action)

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](/media/news/meteorological-services-are-vital-ocean-economy)

07 March 2025

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Meteorological services are vital for the ocean economy

](/media/news/meteorological-services-are-vital-ocean-economy)

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](/media/news/la-nina-event-expected-be-short-lived)

06 March 2025

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La Niña event is expected to be short-lived

](/media/news/la-nina-event-expected-be-short-lived)

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](/media/news/report-how-climate-insights-drive-more-reliable-renewable-energy-transition)

04 March 2025

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Report: How climate insights drive a more reliable renewable energy transition

](/media/news/report-how-climate-insights-drive-more-reliable-renewable-energy-transition)

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](/media/news/ipcc-opens-session-hangzhou-china)

24 February 2025

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IPCC opens session in Hangzhou, China

](/media/news/ipcc-opens-session-hangzhou-china)

[

](/media/news/typhoon-committee-showcase-regional-collaboration)

21 February 2025

[

Typhoon Committee is a showcase for regional collaboration

](/media/news/typhoon-committee-showcase-regional-collaboration)

[

](/media/news/green-climate-fund-grants-boost-early-warnings-all)

20 February 2025

[

Green Climate Fund grants boost Early Warnings for All

](/media/news/green-climate-fund-grants-boost-early-warnings-all)

[

](/media/news/glacier-melt-will-unleash-avalanche-of-cascading-impacts)

21 March 2025

[

Glacier melt will unleash avalanche of cascading impacts

](/media/news/glacier-melt-will-unleash-avalanche-of-cascading-impacts)

[

](/media/news/wmo-report-documents-spiralling-weather-and-climate-impacts)

19 March 2025

[

WMO report documents spiralling weather and climate impacts

](/media/news/wmo-report-documents-spiralling-weather-and-climate-impacts)

[

](/media/news/international-womens-day-rallying-call-action)

08 March 2025

[

International Women’s Day is a rallying call for action

](/media/news/international-womens-day-rallying-call-action)

[

](/media/news/meteorological-services-are-vital-ocean-economy)

07 March 2025

[

Meteorological services are vital for the ocean economy

](/media/news/meteorological-services-are-vital-ocean-economy)

[

](/media/news/la-nina-event-expected-be-short-lived)

06 March 2025

[

La Niña event is expected to be short-lived

](/media/news/la-nina-event-expected-be-short-lived)

[

](/media/news/report-how-climate-insights-drive-more-reliable-renewable-energy-transition)

04 March 2025

[

Report: How climate insights drive a more reliable renewable energy transition

](/media/news/report-how-climate-insights-drive-more-reliable-renewable-energy-transition)

[

](/media/news/ipcc-opens-session-hangzhou-china)

24 February 2025

[

IPCC opens session in Hangzhou, China

](/media/news/ipcc-opens-session-hangzhou-china)

[

](/media/news/typhoon-committee-showcase-regional-collaboration)

21 February 2025

[

Typhoon Committee is a showcase for regional collaboration

](/media/news/typhoon-committee-showcase-regional-collaboration)

[

](/media/news/green-climate-fund-grants-boost-early-warnings-all)

20 February 2025

[

Green Climate Fund grants boost Early Warnings for All

](/media/news/green-climate-fund-grants-boost-early-warnings-all)

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View all news

](/news)

[

Early Warnings for All

](https://earlywarningsforall.org/site/early-warnings-all "(opens in a new window)")

Early Warnings for All is a groundbreaking initiative to ensure that everyone on Earth is protected from hazardous weather, water, or climate events through life-saving early warning systems by the end of 2027.

[

Global Early Warnings for All Initiative

](https://earlywarningsforall.org/site/early-warnings-all "(opens in a new window)")

Trending topics

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[Water](/topics/water)   

[Earth observation satellites](/topics/earth-observation-satellites)   

[El Niño / La Niña](/topics/el-nino-la-nina)   

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View all topics

](/topics)

Events

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Meeting

21 March 2025, 15:00 - 18:00

City of New York, United States

[Launch of the 1st World Day for Glaciers and pivot event World Water Day](/events/meeting/launch-of-1st-world-day-glaciers-and-pivot-event-world-water-day)

24 March 2025, 15:00 - 17:00

Switzerland

[World Meteorological Day 2025 Ceremony](/events/world-meteorological-day-2025-ceremony)

Meeting

20 March 2025 - 21 March 2025

Paris, France

[Celebrations of the 1st World Day for Glaciers and World Water Day](/events/meeting/celebrations-of-1st-world-day-glaciers-and-world-water-day)

Meeting

21 March 2025, 14:00 - 17:00

City of New York, United States

[Launch of the 1st World Day for Glaciers and pivot event World Water Day](/events/meeting/launch-of-1st-world-day-glaciers-and-pivot-event-world-water-day)

24 March 2025, 14:00 - 16:00

Switzerland

[World Meteorological Day 2025 Ceremony](/events/world-meteorological-day-2025-ceremony)

Meeting

20 March 2025 - 21 March 2025

Paris, France

[Celebrations of the 1st World Day for Glaciers and World Water Day](/events/meeting/celebrations-of-1st-world-day-glaciers-and-world-water-day)

Meeting

21 March 2025, 15:00 - 18:00

City of New York, United States

[Launch of the 1st World Day for Glaciers and pivot event World Water Day](/events/meeting/launch-of-1st-world-day-glaciers-and-pivot-event-world-water-day)

24 March 2025, 15:00 - 17:00

Switzerland

[World Meteorological Day 2025 Ceremony](/events/world-meteorological-day-2025-ceremony)

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View all events

](/activities/events-and-meetings)

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WMO Community

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](/wmo-community)

The Community Platform allows WMO to improve the efficiency of its working relationships with its Members. The Platform is accessible to anyone.

[](/wmo-community)

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Regions

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](/activities/regions)

WMO divides the world into six regions for the purpose of coordinating meteorological activities, known as WMO regions.

[](/activities/regions)