WMO Releases New Ozone and UV Assessment as World Ozone Day Highlights Climate Protection
The World Meteorological Organization has released its latest Ozone and UV Bulletin, providing a fresh scientific assessment of the condition of the ozone layer and ultraviolet radiation trends.
The bulletin was released on September 16, 2026, coinciding with World Ozone Day. The annual assessment examines changes in the ozone layer, UV radiation and the continuing need for atmospheric monitoring and international action.
The update comes as countries mark 10 years since the adoption of the Kigali Amendment to the Montreal Protocol. The amendment targets hydrofluorocarbons (HFCs), powerful greenhouse gases widely used in refrigeration and air-conditioning systems.
The United Nations says the Kigali Amendment, if fully implemented, could prevent up to 0.5°C of global warming by the end of this century. Combining the HFC phase-down with more energy-efficient cooling could provide an even greater climate benefit.
The WMO’s latest work also emphasizes the importance of continuing atmospheric observations. Scientists monitor ozone concentrations and ultraviolet radiation because changes in the ozone layer can affect human health, ecosystems and climate.
NASA is also tracking the Antarctic ozone hole with updated observations for September 16, providing a real-time scientific picture during the Southern Hemisphere’s ozone-hole season.
The latest developments underline how ozone protection and climate action are increasingly connected. The transition toward cleaner and more energy-efficient cooling technologies is being viewed as an important part of reducing greenhouse-gas emissions while protecting the ozone layer.
