The 2025 Antarctic ozone hole was one of the smallest in recent decades. Despite annual fluctuations, a long-term recovery trend is observed. The World Ozone Day celebrates the success of the Montreal Protocol.

UV radiation remains a threat to health, and atmospheric monitoring is essential to inform policy. The WMO Ozone Bulletin reported that last year's ozone hole was significantly below the 1990-2010 average in terms of depth and extent. Further information on ozone layer recovery and the factors influencing it can be found in the WMO Ozone Bulletin, which provides details on the current state of the ozone layer and its recovery trend.