World Meteorological Day 2023

World Meteorological Day

March 23, 2022

The Future of Weather, Climate and Water across Generations


We live on an interconnected planet. We share one Earth, with one atmosphere and one ocean


Our weather and climate and water cycle know no national or political boundaries. International cooperation is essential. This philosophy has driven the work of the global meteorological community since 1873 and will guide us as we translate science into services to society for present and future generations.

World Meteorological Day 2023 takes place during the 150th anniversary of WMO and the 135th anniversary of the IMN. It highlights past achievements, present progress and future potential, from late 19th century telegraphs and shipping forecasts to supercomputers and space technology.

Throughout this time, the National Weather and Hydrological Services have worked around the clock to collect and standardize the data that underpin the weather forecasts we now take for granted. The history of WMO data exchange is a remarkable story of scientific vision, technological development and, above all, of a unique system of cooperation in the service of society.

The anniversary also serves as a reminder of our changing climate. The International Meteorological Organization, predecessor of the World Meteorological Organization, was established in 1873 in an era when pollution from industrial and human activities was in its infancy.

As a result of heat-trapping greenhouse gases, the average global temperature is now more than 1° Celsius higher compared to 150 years ago. Our climate 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 reduce emissions and ensure that future generations can 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 exchanged more freely among a broader community than ever before, and new tools including machine learning and artificial intelligence are available. There has been significant progress in monitoring, simulating and projecting global climate to support decision making.

Our weather, climate and water cycle will be different in the future than in the past. Weather, climate and hydrological services will help us address the associated challenges and take advantage of the opportunities.



Werner Stolz
Director General
Instituto Meteorológico Nacional




Día Meteorológico 2023