October 16, 2025

World Ozone Day

  • World Ozone Day or International Day for the Preservation of the Ozone Layer is observed annually on 16 September.
  • The Theme: Montreal Protocol: fixing the ozone layer and reducing climate change.
  • The day is dedicated to highlight the importance of Ozone layer and its significant contribution in protecting our planet Earth.
  • Ozone layer is made up of Trioxygen molecule (O3) and has the potential to absorb harmful Ultraviolet (UV) rays.
  • World Ozone Day is recognised to commemorate the Montreal Protocol –an environmental agreement that was established in 1987 against the Ozone depleting substances (ODS) including Chlorofluorocarbons (CFCs), Halons, Carbon Tetrachloride, and Methyl Chloroform.
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