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The Ozone Hole 2025
Antarctic Situation at 2025 September 29
Antarctic ozone
today:
The 2025
ozone hole grew to around 20 million square kilometres (msqkm) in
late August, the largest for that time over the last decade and
peaked at 23 msqkm on September 9. Since then it has averaged around
18 msqkm and is currently 17 msqkm, the smallest it has been in late
September for over a decade. The
polar
vortex peaked at around 32 msqkm in early September, about average,
but has since shrunk to around 26 msqkm, much below average for late
September.
The area
with potential PSCs began to grow from early May and reached its
maximum extent of 28 msqkm in late July. It now covers some 10
msqkm, a little below the long term average. The bulk of the ozone
layer is below the -78°C Polar Stratospheric Clouds (PSC) formation
threshold. The temperature of the ozone layer is warmest around
Antarctica and declines towards the equator and the pole. Ozone
values are near their maximum around the continent and minimum over
it. They currently range from a low of around 140 Dobson Units (DU)
to a high of around 480 DU.
The ozone
hole clipped the tip of South America on September 17 and was over
South Georgia from September 19 to 20. It may return there around
October 6. The ozone hole is expected to persist over the next ten
days or more.
Antarctic Situation at 2025 September 15
Antarctic ozone today:
The 2025 ozone hole has grown and now covers 18 million square
kilometres (msqkm), near average, though varying about it. The
polar vortex is near its maximum extent and covers 32 msqkm, about
average. The area with potential PSCs began to grow from early May
and reached its maximum extent of 28 msqkm in late July. It now
covers some 19 msqkm, close to the long term average. The bulk of
the ozone layer is below the -78°C Polar Stratospheric Clouds (PSC)
formation threshold. The temperature of the ozone layer is warmest
around Antarctica and declines towards the equator and the
pole. Ozone values continue to build around the continent and
decline over it. They currently range from a low of around 160
Dobson Units (DU) to a high of around 460 DU. The ozone hole
is predicted to clip the tip of South America on September 17 and be
over South Georgia from September 19 to 20.
Antarctic Situation at 2025 September 1 Antarctic
ozone today:
The 2025 ozone hole is
growing and now covers 20 million square kilometres (msqkm), much
larger than average. The
polar vortex is near its
maximum extent and covers 32 msqkm, about average.
The area with potential PSCs
began to grow from early May and reached its maximum extent of 28
msqkm in late July. It now covers some 24 msqkm, a little larger
than the long term average. The bulk of the ozone layer is below the
-78°C Polar Stratospheric Clouds (PSC) formation threshold. The
temperature of the ozone layer is warmest around Antarctica and
declines towards the equator and the pole. Ozone values continue to
build around the continent and decline over it. They currently range
from a low of around 170 Dobson Units (DU) to a high of around 460
DU.
Antarctic Situation at 2025 August 26 Antarctic
ozone today:
The 2025 ozone hole is
growing and now covers 13 million square kilometres (msqkm), a
little larger than average. The
polar vortex is near its
maximum extent and covers 32 msqkm, a little larger than average.
The area with potential PSCs
began to grow from early May and reached its maximum extent of 28
msqkm in late July. It now covers some 25 msqkm, a little larger
than the long term average. The bulk of the ozone layer is below the
-78°C Polar Stratospheric Clouds (PSC) formation threshold. The
temperature of the ozone layer is warmest around Antarctica and
declines towards the equator and the pole. Ozone values continue to
build around the continent and decline over it. They currently range
from a low of around 160 Dobson Units (DU) to a high of around 430
DU.
Antarctic Situation at 2025 August 10
Antarctic ozone
today:
The 2025
ozone hole is beginning to form. The
polar
vortex is growing and now covers 30 million square kilometres
(msqkm), a little larger than average.
The area
with potential PSCs began to grow from early May and covers some 27
msqkm, a little larger than the long term average and near its
maximum extent. The bulk of the ozone layer is now below the -78°C
Polar Stratospheric Clouds (PSC) formation threshold. The
temperature of the ozone layer is warmest around Antarctica and
declines towards the equator and the pole. Ozone values continue to
build around the continent and decline over it. They currently range
from a low of around 220 Dobson Units (DU) to a high of around 460
DU.
Antarctic Situation at 2025 July 21
Antarctic ozone
today:
The 2025
polar vortex is growing and now covers 25 million square kilometres
(msqkm).
The area
with potential PSCs began to grow from early May and covers some 24
msqkm, close to the long term average and near its maximum extent.
The bulk of the ozone layer is now below the -78°C Polar
Stratospheric Clouds (PSC) formation threshold. The temperature of
the ozone layer is warmest around Antarctica and declines towards
the equator and the pole. Ozone values are now building around the
continent and are lower over it. They currently range from a low of
around 240 Dobson Units (DU) to a high of around 430 DU.
Antarctic Situation at 2025 July 14
Antarctic ozone
today:
The 2025
polar vortex is growing and now covers 25 million square kilometres
(msqkm).
The area
with potential PSCs began to grow from early May and covers some 25
msqkm, close to the long term average. The bulk of the ozone layer
is now below the -78°C Polar Stratospheric Clouds (PSC) formation
threshold. The temperature of the ozone layer is warmest around
Antarctica and declines towards the equator and the pole. Ozone
values are now building around the continent and lower over it. They
currently range from a low of around 240 Dobson Units (DU) to a high
of around 400 DU.
Antarctic Situation at 2025 July 7 Antarctic
ozone today:
The 2025 polar vortex is
growing and now covers 23 million square kilometres (msqkm).
The area with potential PSCs
began to grow from early May and covers some 22 msqkm, close to the
long term average. The bulk of the ozone layer is now below the
-78°C Polar Stratospheric Clouds (PSC) formation threshold. The
temperature of the ozone layer is warmest around Antarctica and
declines towards the equator and the pole. Ozone values are now
building around the continent and lower over it. They currently
range from a low of around 240 Dobson Units (DU) to a high of around
430 DU.
Antarctic Situation at
2025 June 23
Antarctic ozone today:
The 2025 polar vortex is beginning to form and has grown to
20 million square kilometres (msqkm). The area with potential PSCs
began to grow from early May and covers some 19 msqkm, a little
larger than the long term average. The bulk of the ozone layer
temperature is cooloing towards the -78°C Polar Stratospheric Clouds
(PSC) formation threshold and has passed it in the highest parts of
the ozone layer. The temperature of the ozone layer is now warmest
around Antarctica and declines towards the equator and the
pole. Ozone values are now building around the continent and lower
over it. They currently range from a low of around 240 Dobson Units
(DU) to a high of around 400 DU.
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