WMO Ozone and UV Bulletin

The WMO Ozone and UV Bulletin is an annually issued scientific update that assesses the health of the ozone layer and UV radiation trends, highlighting recovery progress, challenges posed by extreme events, and the crucial need for continued monitoring and policy action.

Related publications

Two mountain peaks rise above a layer of clouds at sunrise, with a gradient sky transitioning from pink to blue in the background.
Publication
16 September 2026

WMO Ozone and UV Bulletin No. 4 – September 2026
View of white clouds covering the Earth's surface with a gradient blue sky above, taken from a high altitude, possibly from an airplane or stratospheric balloon.
Publication
16 September 2025

WMO Ozone and UV Bulletin No. 3 – September 2025
Sun shines brightly above a layer of scattered clouds, with streaks of white clouds and contrails stretching across a blue sky.
Publication
16 September 2024

WMO Ozone and UV Bulletin No. 2 – September 2024
Blue sky with scattered white clouds and the sun shining brightly in the upper right corner.
Publication
28 June 2023

WMO Ozone and UV Bulletin No. 1 – June 2023

Related press releases

Aerial view of farmland with a clear blue sky above and a hazy horizon in the distance.
Press Release
16 September 2026

WMO bulletin shows successes and challenges in ozone layer recovery
A digitally rendered image of Earth showing North and South America, with vivid, colorful lighting and a gradient background.
Press Release
16 September 2025

WMO Bulletin shows recovery of ozone layer, driven by science