World Ozone Day 2026 was observed on 16 September under the theme “Global action for a cooler planet”, as the UN Ozone Secretariat tied nearly four decades of ozone protection directly to the climate crisis. The 2026 theme celebrates ten years of sustainable cooling under the Kigali Amendment to the Montreal Protocol, linking the recovery of the ozone layer to the phase-down of potent greenhouse gases used in everyday cooling.
The observance marks the date in 1987 when the Montreal Protocol was signed — the landmark treaty that became the first in United Nations history to achieve universal ratification, with all 198 countries on board by 16 September 2009.
FAKTA
- Theme: “Global action for a cooler planet” — celebrating 10 years of sustainable cooling under the Kigali Amendment.
- Observed: 16 September 2026, marking the 1987 signing of the Montreal Protocol.
- Kigali Amendment: Adopted in 2016 in Kigali, Rwanda; drives the global phase-down of hydrofluorocarbons (HFCs), potent greenhouse gases used in refrigeration and air conditioning.
- Progress: Nearly 99% of controlled ozone-depleting substances have been eliminated; the ozone layer is expected to return to 1980 levels by around 2040 across most of the world.
- Climate benefit: Full implementation of the Kigali Amendment could avoid up to 0.3–0.5°C of global warming by the end of this century.
From ozone protection to sustainable cooling
The Montreal Protocol’s record is often described as the most successful environmental treaty ever signed. Global action has now eliminated nearly 99 per cent of controlled ozone-depleting substances, and the World Meteorological Organization reports the ozone hole continues to recover.
The Kigali Amendment widened that work by adding a climate mandate: phasing down HFCs, the chemicals that replaced ozone-depleting substances but turned out to trap heat thousands of times more effectively than carbon dioxide. Over the past decade, countries and industries have shifted toward more energy-efficient and climate-friendly cooling technologies.
What the Ozone Secretariat emphasised
The Ozone Secretariat’s campaign materials, published in English, Arabic, Chinese, Spanish, French and Russian, present the Protocol and the Amendment as proof that science-based policy, universal participation, strong compliance, dedicated financing and effective partnerships can deliver measurable results.
The two instruments together, the secretariat says, show that cooling the planet is possible when countries act collectively, industries innovate responsibly and partnerships turn commitments into action — with benefits for the climate, economies and people.
Cooling demand is rising
As global temperatures climb, demand for cooling is rising fast. The 2026 theme calls for meeting that demand with energy-efficient and climate-friendly solutions rather than a new wave of high-emission refrigerants — framing cooling as essential infrastructure for public health, food security and economic development.
Marking the day around the world
Governments and organisations marked the anniversary with their own milestones. India used the occasion to launch a Net Zero Portal — a centralised digital platform for voluntary disclosure of net-zero commitments — alongside a National Action Plan on Climate Change dashboard. In Assam, a state Cooling Action Plan was launched in Guwahati on 16 September 2026.
The Solomon Islands, through its National Ozone Unit, highlighted the role of proper refrigerant handling and recovery in the refrigeration and air-conditioning sector, which underpins homes, hospitals, food storage and fisheries.
Why it matters
The ozone story is a rare proven model of collective action delivering a planetary result. With the Kigali Amendment’s phase-down still in progress, the next decade will test whether the same machinery can help limit warming even as the world demands more cooling than ever before.
