ClimateWednesday, November 11, 20261 min read

NASA reveals Earth's ozone hole has grown to a size not seen in a decade

By ScienceDaily Top Science · Published by Everything Blog

In short

The ozone hole averaged roughly 9.6 million square miles during its peak depletion window between September 7 and October 13, 2026. At its maximum on September 18, the deficit spanned 10.5 million square miles over the Antarctic continent. Researchers noted that international bans on ozone-depleting substances successfully averted worse outcomes, keeping the gap an estimated 1 to 2 million square miles smaller than peak 2000 levels would have yielded.

Key points

Unusual atmospheric weather patterns and an exceptionally cold polar vortex triggered the…: Unusual atmospheric weather patterns and an exceptionally cold polar vortex triggered the temporary, dramatic ozone expansion.
International regulations targeting ozone-depleting substances prevented an additional 1…: International regulations targeting ozone-depleting substances prevented an additional 1 to 2 million square miles of depletion.
Scientists maintain that the broader stratospheric ozone layer is still projected to full…: Scientists maintain that the broader stratospheric ozone layer is still projected to fully heal later this century.

Sources checked by our analysis pipeline: 1

- Date:

- November 11, 2026

- Source:

- NOAA

- Summary:

- The Antarctic ozone hole expanded to its seventh-largest size on record in 2026, driven by unusual weather conditions that pushed it close to its historic maximum. Scientists say international restrictions on ozone-destroying chemicals prevented even greater damage, and Earth's protective ozone layer is still recovering.

- Share:

Unusual weather patterns over Antarctica caused the ozone hole to expand dramatically in 2026, reaching one of its largest sizes on record. Despite the striking increase, scientists from NASA and NOAA say Earth's protective ozone layer is continuing its gradual recovery and remains on track to heal later this century.

The 2026 Antarctic ozone hole ranked as the seventh-largest in 48 years of observations, based on its average seasonal area. Scientists attributed the expansion primarily to an exceptionally strong polar vortex, a large circulation of winds that influences atmospheric conditions over Antarctica. They also emphasized that international efforts to reduce harmful chemicals have prevented the hole from becoming even larger.

Between September 7 and October 13, 2026, when ozone depletion…

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Key Points

Unusual atmospheric weather patterns and an exceptionally cold polar vortex triggered the…: Unusual atmospheric weather patterns and an exceptionally cold polar vortex triggered the temporary, dramatic ozone expansion.
International regulations targeting ozone-depleting substances prevented an additional 1…: International regulations targeting ozone-depleting substances prevented an additional 1 to 2 million square miles of depletion.
Scientists maintain that the broader stratospheric ozone layer is still projected to full…: Scientists maintain that the broader stratospheric ozone layer is still projected to fully heal later this century.

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Climate

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AI Analysis

Tone

Mixed

In short

Key Points

Unusual atmospheric weather patterns and an exceptionally cold polar vortex triggered the…: Unusual atmospheric weather patterns and an exceptionally cold polar vortex triggered the temporary, dramatic ozone expansion.
International regulations targeting ozone-depleting substances prevented an additional 1…: International regulations targeting ozone-depleting substances prevented an additional 1 to 2 million square miles of depletion.
Scientists maintain that the broader stratospheric ozone layer is still projected to full…: Scientists maintain that the broader stratospheric ozone layer is still projected to fully heal later this century.

Topics

Climate

Was this summary useful?

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NASA reveals Earth's ozone hole has grown to a size not seen in a decade

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