The fourth annual International Day of Clean Air for blue skies will focus on the theme, ‘Together for Clean Air’. The theme aims to highlight the urgent need for stronger partnerships, increased investment, and shared responsibility for overcoming air pollution. It also underscores the direct impact of air pollution on human and ecosystem health and the shared responsibility to protect the atmosphere and ensure healthy air for everyone.

The International Day of Clean Air for blue skies is commemorated annually on 7 September in recognition of the fact that clean air is important for the health and day-to-day lives of people, while air pollution is the single greatest environmental risk to human health and one of the main avoidable causes of death and disease globally. 

By resolution 74/212 of 22 January 2020, the UN General Assembly (UNGA) designated the Day to emphasize the need to make further efforts to improve air quality, including reducing air pollution, to protect human health.

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date: 7 September 2023
location: worldwide
www: https://www.unep.org/events/un-day/international-day-clean-air-blue-skies-2023
https://www.un.org/en/observances/clean-air-day