September 7 — International Day of Clean Air for Blue Skies
On September 7, 2026, the world marks the seventh International Day of Clean Air for Blue Skies.
Established by the United Nations, the day is a yearly reminder that clean air isn't an abstract environmental ideal — it's a condition of life shared by people, dolphins, and whales alike.
Where the day comes from
The International Day of Clean Air for Blue Skies was established by UN General Assembly resolution 74/212, adopted on 19 December 2019, and first observed in 2020.
Each year, the day is coordinated by the UN Environment Programme (UNEP) together with the Climate and Clean Air Coalition (CCAC).
A matter of life and breath According to the World Health Organization, air pollution — both outdoor and indoor — contributes to around 7 million premature deaths every year.
Major sources include industrial emissions, transport, agriculture, and fossil fuel burning, alongside household factors such as cooking with solid fuels, tobacco smoke, and household chemicals.
2026 theme: air and climate as one challenge This year's theme, Clean Air for Climate Action, frames air quality and climate policy as two sides of the same problem.
The day coincides with the launch of UNEP's Spotlight Report — a global economic assessment of integrated climate and clean air action, outlining 25 concrete measures and their combined economic benefits.
The flagship 2026 event takes place in Bangkok, Thailand, organized by UNEP together with the UN Economic and Social Commission for Asia and the Pacific (UNESCAP).
Sky and ocean, one heritage For Dolphin Hub and the One Heritage campaign, this day is never only about the air above us. Pollutants released into the atmosphere — black carbon, nitrogen compounds, dust — don't stay there: they settle onto the ocean surface, dissolve into seawater, and become part of the chemistry of coastal and open-ocean ecosystems, affecting phytoplankton, coral reefs, and marine mammals.
Scientific studies have even detected atmospheric particles tied to fossil fuel combustion inside the tissue of marine organisms — a direct, physical link between the sky and the sea.
For dolphins and whales, whose entire lives depend on water quality, clean skies and a clean ocean are not two separate causes. They're one.
What you can do today
Clean skies start with decisions made every day — and end in an ocean that breathes alongside us.
Established by the United Nations, the day is a yearly reminder that clean air isn't an abstract environmental ideal — it's a condition of life shared by people, dolphins, and whales alike.
Where the day comes from
The International Day of Clean Air for Blue Skies was established by UN General Assembly resolution 74/212, adopted on 19 December 2019, and first observed in 2020.
Each year, the day is coordinated by the UN Environment Programme (UNEP) together with the Climate and Clean Air Coalition (CCAC).
A matter of life and breath According to the World Health Organization, air pollution — both outdoor and indoor — contributes to around 7 million premature deaths every year.
Major sources include industrial emissions, transport, agriculture, and fossil fuel burning, alongside household factors such as cooking with solid fuels, tobacco smoke, and household chemicals.
2026 theme: air and climate as one challenge This year's theme, Clean Air for Climate Action, frames air quality and climate policy as two sides of the same problem.
The day coincides with the launch of UNEP's Spotlight Report — a global economic assessment of integrated climate and clean air action, outlining 25 concrete measures and their combined economic benefits.
The flagship 2026 event takes place in Bangkok, Thailand, organized by UNEP together with the UN Economic and Social Commission for Asia and the Pacific (UNESCAP).
Sky and ocean, one heritage For Dolphin Hub and the One Heritage campaign, this day is never only about the air above us. Pollutants released into the atmosphere — black carbon, nitrogen compounds, dust — don't stay there: they settle onto the ocean surface, dissolve into seawater, and become part of the chemistry of coastal and open-ocean ecosystems, affecting phytoplankton, coral reefs, and marine mammals.
Scientific studies have even detected atmospheric particles tied to fossil fuel combustion inside the tissue of marine organisms — a direct, physical link between the sky and the sea.
For dolphins and whales, whose entire lives depend on water quality, clean skies and a clean ocean are not two separate causes. They're one.
What you can do today
- Rethink everyday choices that shape emissions: transport, energy use, and open burning of waste or plant material.
- Support local air-quality monitoring and clean-air initiatives.
- Share the connection between clean air and ocean health by joining the One Heritage campaign.
Clean skies start with decisions made every day — and end in an ocean that breathes alongside us.
06.09.2026
News
ONE HERITAGE campaign