These maps show how the relative amounts of the key ingredients for ozone (smog) formation in the United States change throughout the summer.
Published Aug 7, 2009
Blues and purples in this image of Antarctic ozone concentrations reveal the developing ozone hole of 2009.
Published Sep 17, 2009
Recent observations from satellites and ground stations suggest that atmospheric ozone levels for March in the Arctic were approaching the lowest levels in the modern instrumental era.
Published Mar 30, 2011
New research from NASA scientists shows that the amount of chlorine in the stratosphere over the South Pole is declining at the same time that ozone holes are becoming less severe.
Published Feb 13, 2018
The smaller ozone hole was strongly influenced by an unstable and warmer-than-usual Antarctic vortex.
Published Nov 3, 2017
NASA satellites have observed the Antarctic ozone hole since the late 1970s—before and after nations agreed to stop producing chemicals that destroy the ozone layer.
Published Sep 18, 2012
The growth of the ozone hole appears to have stopped thanks to the banning of most ozone-depleting chemicals.
Published Sep 17, 2014
On September 12, 2008, the Antarctic ozone hole reached its maximum size for the year.
Published Oct 25, 2008
