Ozone Layer Recovery Delayed by Lingering Chemicals, Scientists Say

NASA and NOAA reported 2025 Antarctic ozone hole was fifth-smallest since 1992, with max extent of 8.83 million sq mi.
Montreal Protocol controls limit ozone-depleting compounds, aiding gradual recovery.
Ozone hole defined as areas below 220 Dobson Units by NOAA and South Pole Observatory.
2025 hole breaking up three weeks earlier than past decade, average extent 7.23 million sq mi, increasing UV risks.
Ozone layer projected to recover later this century due to lingering chlorine and bromine.

Science | Environment | Ozone

Antarctica

1 month ago