Ozone levels in the upper atmosphere are expected to recover from damage caused by certain chemicals by the end of the 21st century. A cooler stratosphere due to climate change may even lead to an extra boost in ozone levels. Different future scenarios show that higher greenhouse gas emissions result in more ozone in the equatorial upper stratosphere. However, in the Antarctic upper stratosphere, excess nitrogen oxides descending faster from above prevent ozone levels from exceeding pre-damage levels. This is mainly influenced by nitrogen oxides produced in the polar thermosphere and upper mesosphere by energetic electron precipitation and solar UV. These findings suggest that the future evolution of Antarctic ozone will be influenced by nitrogen oxides in the upper atmosphere.