World Meteorological Organization

We're headed for an El Niño that is — quite literally — off the charts. WMO's Global Seasonal Climate Update shows that El Niño is forecast to exceed the scale of global monitoring charts. Its impacts will be felt well into 2027. Read the full update:

Lake Chad Basin is a lifeline for 50M people across 5 African countries. But floods, droughts & extreme weather threaten their lives & livelihoods. WMO, @lcbc_cblt & @GWPnews launched a project to strengthen early warnings & help communities prepare. 🔗

In 2025, global CO₂ concentration rose to a record 426.8 parts per million. That's 153% of pre-industrial levels. Every additional ppm traps more heat and supercharges the ocean and the atmosphere. 🔗 Read the WMO Greenhouse Gas Bulletin:

RT @UN_News_Centre: Record carbon dioxide levels will impact us for centuries, says UN weather agency @WMO.

RT @UNGeneva: “The past 11 years have been the warmest on record and this trend is set to continue. CO2 has a very long lifetime and so will affect the global climate not just for years but for decades & even centuries,” @WMO Deputy Secretary-General Ko Barrett warned.

Greenhouse gas levels hit new record highs, locking in more long-term temperature increase. The intensifying El Niño may lead to a further surge. New WMO Greenhouse Gas Bulletin provides authoritative scientific information on the state of our climate. 👉

WMO Deputy Secretary-General Ko Barrett will brief the media on the state of greenhouse gases in the atmosphere in 2025. Tuesday, 27 October 2026 1000 CEST | 0800 GMT 🔴 LIVE on @UNWebTV:

What’s new in MeteoWorld? Explore maritime safety in the Americas, early warning exercises in the Caribbean, new intl. pledges for ocean observation and weather forecasts that support sea rescues & help farmers plan harvests. Explore these stories & more:

AI is transforming how we forecast the weather and understand the climate. But how can we make it work for everyone? Explore how the Philippines & Singapore are integrating AI into their operations & building foundations for its long-term use. Register👉

No nation can tackle weather, water, and climate challenges alone. WMO joins the @unitednations family in celebrating more than 8 decades of international cooperation to foster peace, unity and hope for people all around the world. Happy #UNDay!

📢 We're hiring! WMO is looking for professionals from diverse backgrounds and areas of expertise interested in a career in meteorology, hydrology, geophysical sciences, and international development. 👉 Check out all vacancies here and apply today:

RT @UN_News_Centre: El Niño is set to hit fragile communities hard. @UNOCHA and @WMO are sounding the alarm, appealing for immediate assistance to support communities already affected by what has been described as the strongest El Niño on record.

RT @UNReliefChief: El Niño is back, and it is more powerful than ever. We must act urgently to limit the impact. With @WMO, we have set out the potential impact. And called for action.

WMO SG Celeste Saulo & @UNOCHA @UNReliefChief call for urgent humanitarian action as El Niño is set to hit fragile communities hard. New WMO update indicates that the current El Niño event could be unprecedented in strength. Read SG Saulo's statement:

Join @WMO Secretary-General Celeste Saulo and @UNOCHA @UNReliefChief today as they call for early action as an unprecedented El Niño is set to hit fragile communities hard. 🗓️ Wednesday, 21 October 2026 | 1300 CEST 🔴 LIVE via @UNWebTV:

The total amount of water stored in groundwater, lakes and rivers, soil moisture, vegetation and ice and snow – has been in decline since mid-2010s. Read the WMO #StateOfWater Report 2025 to learn about what this means for the water we depend on.

Grenada becomes the latest Member of the World Meteorological Organization, having deposited its instrument of accession to the WMO Convention. WMO now has 194 Members: 188 Member States & 6 Member Territories. Congratulations & welcome to the WMO family!

📢 We're hiring! WMO is looking for consultants with expertise in speechwriting, national framework development and linguistic technology to support various areas of our work. Explore the available opportunities and apply today:

Swiss glaciers lost 5% of their ice in 2026, accdg to GLAMOS. Their total volume has shrunk by nearly 20% in the last 5 years. This echoes the WMO’s #StateOfWater 2025 report, which found that every glaciated region on Earth lost ice in the last 5 years.

The intensifying El Niño is likely to bring above-average temperatures to much of the globe and shift rainfall patterns, increasing the risk of drought and floods in different regions. Read the latest WMO Global Seasonal Climate Update:

Today more than 120 countries have multi-hazard early warning systems, a big leap from ~50 countries a decade ago. But many are still unprotected. #EarlyWarningsForAll is not a luxury. It saves lives, reduces economic losses, & provides tenfold return on investment. #DRRday

El Niño was first observed by Peruvian fishermen, who noticed that unusually warm coastal waters sometimes appeared and reduced their catches. Beyond the Pacific, El Niño can affect the food that reaches our plates. Its impacts vary across regions. Read:

Another flash flood has hit Nepal, prompting warnings for riverside communities. Highlighting the need for coordinated action, @FloodDroughtMgt brought together experts in mountain regions to examine how they can better prepare and manage evolving hazards.

As El Niño strengthens, above-normal temperatures are forecast across much of the world, threatening food systems. Extreme heat can reduce fish catches and crop yields, stress livestock and endanger farmers’ health. Learn more: #WorldFoodDay