Tuesday, 7 September 2021
Promotes action to improve air quality and protect human health and the environment.
Frequently asked questions
- When is International Day of Clean Air for Blue Skies 2021?
- International Day of Clean Air for Blue Skies 2021 is on Tuesday, 7 September 2021.
- What day of the week is International Day of Clean Air for Blue Skies 2021?
- It falls on Tuesday.
- How is International Day of Clean Air for Blue Skies calculated?
- This event is observed every year on 7 September.