PURPOSE: Every March 23rd, the World Meteorological Organization commemorates the coming into force of the Convention establishing the Organization on this day in 1950. The World Meteorological Day showcases the essential contribution of National Meteorological and Hydrological Services to the safety and well-being of society and is celebrated with activities around the world. The themes chosen for World Meteorological Day reflect topical weather, climate or water-related issues.As a result of heat-trapping greenhouse gases, the average global temperature is now more than 1° Celsius higher today compared to 150 years ago. Our weather is more extreme, our ocean is warmer and more acidic, sea levels have risen and glaciers and ice are melting. The rate of change is accelerating. We need urgent action now to slash emissions and to ensure that future generations can both survive and thrive on our planet. The good news is that rapid scientific and technological advances have greatly improved the accuracy of weather forecasts and life-saving early warnings. Big data is being exchanged more freely among a wider community than ever before, and there are new tools including machine learning and Artificial Intelligence.  There has been significant progress to monitor, simulate and project the global climate to support decision-making. Our weather, climate and water cycle will be different in future than in the past. Weather, climate and hydrological services will help us tackle the associated challenges and seize the opportunities. Forecasts of what the weather will be are no longer enough. Impact-based forecasts that inform the public of what the weather will DO are vital to save lives and livelihoods. Yet one in three people are still not adequately covered by early warning systems.

FORUM: "Observing today; Protecting tomorrow." World Meteorological Day 2026. This year, we are highlighting the vital role that young people and communities play as resilience builders. Around the world, individuals and organizations contribute every day to Earth observations, from monitoring weather and water and water to supporting climate awareness and early warnings. We also highlight the work of observation stations from different countries. Why do we need observations?; How does the observing system work?; Closing the gap in observations; Protecting Tomorrow; What’s the weather going to be? It’s most asked questions. We take it for granted that we can find the answer in a matter of seconds at the touch of a mobile phone screen or flick of the television switch. But behind each forecast are millions of observations, crunched through thousands of processors in the extraordinary and unique global network coordinated by the World Meteorological Organization (WMO). Wherever you may be – on land, at sea or in the air – the forecasts you are using are reliant on the free and open exchange of observational data orchestrated by WMO. From satellites orbiting Earth, to weather balloons released into the atmosphere, to ocean buoys and ship reading the waves, to remote stations, meteorological observations underpin everything from our daily routines to multi-billion dollar decisions. The immense and often invisible observing and prediction system coordinated by WMO's the backbone of our economies. It is the central nervous system for early warnings, which have saved many millions of lives. This World Meteorological Day therefore celebrates the work of the WMO community in observing our Earth to protect communities today and build resilience for tomorrow. Follow the conversation with the hashtags: #climateresilience, #weather, #observingtodayprotectingtomorrow, #23March, #Youth, #Communities, #resiliencebuilders, #WorldMetDay, #ClimateAction, #23March, #Meteorology, #Climatology, #Hydrology, #weather.

EVENTS: On Monday, March 23rd, starting at 15:00 CET. the celebration of the World Meteorological Day 2026 under the theme "Observing today; Protecting tomorrow." The Main ceremony will be held at WMO headquarters, Salle Obasi. On this occasion, we’re bringing you the WMO Global State Of Climate 2025, featuring a new indicator; 𝐭𝐡𝐞 𝐄𝐚𝐫𝐭𝐡’𝐬 𝐞𝐧𝐞𝐫𝐠𝐲 𝐢𝐦𝐛𝐚𝐥𝐚𝐧𝐜𝐞. Learn more about the Main ceremony, Register to participate and Stay tuned!

WMO invites diplomatic representatives, staff, partners, United Nations agencies, students and other guests to join the official ceremony. It will be livestreamed in six UN official languages to allow maximum engagement with WMO Members and the staff of National Meteorological and Hydrological Services. Moderator: Nandita Surendran, Chief of WMO Global Communications Observing Today. Makoto Suwa, Astronaut, Japanese Aerospace Exploration Agency [video message]. Keynote presentation from Professor Celeste Saulo, Secretary-General, WMO. Abdulla Al Mandous, President, WMO [video message].
Argentine observing station Esperanza, Antarctica, on the importance of observations in remote Polar regions [live video link up]
Alexia Barrier, round-the-world ocean racer and advocate; Martin Kramp, OceanOPS Technical Coordinator, WMO [live video link up]
Launch of WMO State of the Global Climate 2025 report

Video message from UN Secretary-General António Guterres
Setting the scene by Claire Ransom, Associate Scientific Officer, WMO
Presentation of key findings by Celeste Saulo, Secretary-General, WMO
Protecting Tomorrow

Theo Wellington, Youth Coordinator, WMO
Video from Regional Youth focal points, WMO
Questions and statements from the floor
17:00 - Reception hosted by WMO Staff Association

EXHIBITS: Observing the Future.
An interactive exhibition led by the WMO Youth team.Organized in collaboration with Global Atmosphere Watch (GAW), the Systematic Observations Financing Facility (SOFF) and the World Climate Research Programme (WCRP), this exhibition aims to connect participants with observation stations from diverse regions.

Station displays: Visuals highlighting the work of observation stations from different countries.
Station connections: QR codes enable short, pre-recorded video exchanges.
Station ambassadors: On-site ambassadors facilitate engagement and discussion.

ACTIVITIES: Join the WMD 2026 activities!

Ghana: The Ghana Meteorological Awareness Month; Ghana celebrates this year's Meteorological Awareness Month with the theme, “Observing Today, Protecting Tomorrow.” Learn more.

Pakistan: Agrometeorology without borders: Dr. Adnan Arshad, from Pakistan, with his PhD student Eltayyab al Hasaan, from Sudan, researching grassland restoration and improving production by using advanced meteorology equipment to train youth to help us observe today and protect tomorrow. Concerning car traffic and circulation: There is a lot of traffic with smoke from cars in Cantt (Lahore, Pakistan). It's a problem that affects school timings and people's health. Our research applies a "Rain to Drain" approach, following rainfall from the moment it lands through each stage of the drainage process. This requires a network of hyperlocal weather stations to capture rainfall data at the street scale, soil moisture probes placed through the depth of the rain gardens to record infiltration and storage behaviour, and flow monitors in the sewer network to detect surcharge events. Access to this data is not limited to researchers. Along Broadway, lecterns and posters give residents and visitors a way to see results for themselves. Co-designed with Western Primary School, they make SuDS visible in the street rather than hidden infrastructure. The posters are also interactive, providing both access to live data and opportunities for residents to contribute observations through PuddleWatch, a tool that records when and where water appears. Dr. Adnan Arshad and his team, in collaboration with PODA-Pakistan and the Pakistan Meteorological Department, are building the technical capacity of rural youth engaged in agriculture. The initiative involves installing mobile automatic weather stations at multiple locations to collect site-specific data and provide real-time updates. This enables young farmers to make informed decisions for planning their field operations and management practices - especially critical in the rainfed region of Punjab, Pakistan, where rainfall is the sole source of water for agriculture.

United Kingdom: This image shows How the Water Flows, a collaborative mural created as part of the Water Data for People project and now on display at Wybers Wood School in Grimsby. Designed around the school’s SuDS planter, the mural animates this everyday feature, using it as a focal point to bring together ideas about weather, water, and the local environment. It emerged through a series of workshops and creative sessions involving pupils, researchers, teachers, and artist Emma Garness, who worked together to explore local hydrology, drainage, and environmental change. Led by the University of Hull, Water Data for People uses creative methods to help communities engage with local hydrological data and consider how it can shape future places and decisions. The project builds on the DIG Surface Water Resilience Project, a partnership between North East Lincolnshire Council, City of Doncaster Council, Anglian Water, and Yorkshire Water. Both projects are funded by Defra through the £200 million Flood and Coastal Innovation Programmes, managed by the Environment Agency. Reflecting the ideas and experiences of the pupils, the mural shows how knowledge of rainfall, flooding, water use, and environmental processes connects directly to everyday life and to the spaces around the school. Guided by Garness’s distinctive approach to environmental themes and community identity, these insights were brought together in a vibrant piece of visual storytelling.

SPAIN: Understanding the weather, the CLIMATE and ACTING on it. - Students from the Antonio Machado Primary School are making a meteorological observation at the weather station developed as part of an educational project that received an award on the European Union's Climate Education Day in October 2025.

KENYA: Analysis of Mesoscale Convective Systems (MCS) and Urban Flash Flood Vulnerability: A Case Study of the March 2026 Nairobi Precipitation Event. A multi-spectral satellite RGB composite image showing significant convective activity over the Kenyan highlands and the central Rift Valley. Convective Intensity: The bright, textured blue and white bubbles scattered across the centre of the map represent cumulonimbus clouds - the primary drivers of heavy localized rainfall. Nairobi Impact: Nairobi is situated in the central region currently obscured by dense cloud cover. The presence of these deep convective cells suggests high potential for intense, short-duration downpours. In an urban environment like Nairobi, this type of concentrated rainfall often leads to rapid flash flooding due to saturated soils and strained drainage infrastructure. Moisture Influx: The brownish-orange background indicates the warmer land surface, while the varying shades of blue/cyan highlight moisture-rich air masses moving across the region, creating the "perfect storm" for the flooding events seen in early March 2026.

SWITZERLAND: Appreciation of the Night falls, Lausane, Switzerland.

MEETINGS: Get the dates of the WMO Upcoming conferences, seminars and workshops!

PUBLICATIONS: The state of the climate and water resources, provides scientific information to inform greenhouse gas emissions reductions and delivers climate services and early warnings to support climate adaptation. Science is central to solutions and can supercharge progress on the SDGs across the board. We are united in science.

STATEMENTS: Statement of the United Nations Secretary General on World Meteorological Day 2026. and the Statement of the United Nations Secretary-General of the WMO on the World Meteorological Day 2026; March 23rd.

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