Ozone hole fifth smallest in over 30 years, research shows

In 2025, the Antarctic ozone hole is the fifth-smallest since 1992, measuring 8.83 million square miles, approximately 30% smaller than its peak in 2006, according to NOAA and NASA scientists. Efforts to limit ozone-depleting substances under the Montreal Protocol have contributed significantly to this reduction. Natural factors, such as temperature and atmospheric circulation, also played a role in this year’s smaller size. The ozone layer is crucial for protecting life on Earth from harmful UV radiation, and continued recovery is expected as regulations remain in place.