Climate Events

International Day for the Preservation of the Ozone Layer

The Montreal Protocol, adopted in 1987, united the world to phase out ozone-depleting substances and put the ozone layer on a path to recovery. The International Day for the Preservation of the Ozone Layer raises awareness on the role of the ozone layer in protecting life on Earth

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International Day of Clean Air for Blue Skies

Almost the entire global population (99 per cent) breathes air that exceeds WHO air quality limits, and threatens their health. The global cost of health damages associated with exposure to air pollution is estimated at $8.1 trillion a year, equivalent to 6.1 per cent of global GDP. Shifting away from fossil fuels and investing in renewable energy could prevent 1.2 million deaths a year resulting from exposure to fossil fuel-derived pollution.

International Day of the World’s Indigenous Peoples

Indigenous Peoples' territories contain 11 per cent of the world’s forests and most of the world’s remaining biodiversity. The International Day of the World’s Indigenous Peoples highlights the need to protect their rights, celebrate their unique and rich cultures, and recognize their achievements and contributions to preserving the world’s precious ecosystems.

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High-level Political Forum on Sustainable Development

The High-level Political Forum on Sustainable Development (HLPF) is the central UN platform for the follow-up and review of the 2030 Agenda for Sustainable Development and the SDGs. HLPF 2025 will convene under the theme “Advancing sustainable, inclusive, science- and evidence-based solutions for the 2030 Agenda for Sustainable Development and its Sustainable Development Goals for leaving no one behind” and will review Goal 14 on Life Below Water, along with Goals 3, 5, 8, and 17.

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International Day of Combating Sand and Dust Storms

Sand and dust storms originate from natural sources like deserts, dry lake beds, and coastal regions with loose sediment, but they can be exacerbated by human activities like construction and agriculture that strip vegetation and expose soil to wind erosion. Climate change amplifies the occurrence of sand and dust storms by altering weather patterns and reducing vegetation cover, putting lives and livelihoods at risk. Early warning systems are key to reducing the impacts of these storms.

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4th International Conference on Financing for Development

The 4th International Conference on Financing for Development aspires to build a renewed global financing framework that will unlock greater volumes of capital at a lower cost, building on previous financing agreements. The draft outcome calls for actions to deliver an impact-focused SDG investment push and to reform the international financial architecture to enable the transformative change that the world urgently needs.

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Strengthening Information Integrity on Climate Change

The roundtable “Strengthening Information Integrity on Climate Change”, taking place at the 2025 Internet Governance Forum, will explore robust, evidence-based advocacy and communication strategies to increase resilience to climate information risks.

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Sustainable Gastronomy Day

Understanding the impact the food we eat has on the planet is both an area for awareness and an important opportunity for mitigating climate change. Find out about how you can make choices that are good for you and the planet.

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World Day to Combat Desertification and Drought

Healthy soils absorb and store significant amounts of carbon dioxide from the atmosphere, but climate change is compromising them. In many parts of the world, droughts are becoming longer, more frequent and intense, severely impacting health, agriculture, economies, energy and the environment. Investing in drought resilience and land restoration is critical to protecting lives and livelihoods. Learn why land is critical to combating climate change.

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2025 UN Ocean Conference

The 2025 UN Ocean Conference, co-hosted by France and Costa Rica, will focus on accelerating action and mobilizing all actors to conserve and sustainably use the ocean. It will bring together governments, intergovernmental organizations, academic institutions, scientists, the private sector, Indigenous Peoples, among others, to assess challenges, opportunities and actions around SDG 14. Find out why we need to safeguard the ocean as our best ally against climate change.

The high-level 2025 United Nations Conference to Support the Implementation of Sustainable Development Goal 14: Conserve and sustainably use the oceans, seas and marine resources for sustainable development (the 2025 UN Ocean Conference) will be co-hosted by France and Costa Rica and held in Nice, France, from 9 – 13 June 2025.

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World Oceans Day

The ocean generates 50 per cent of the oxygen we need, absorbs 25 per cent of all carbon dioxide emissions and captures 90 per cent of the excess heat generated by these emissions. But human-induced climate change is depleting this vital resource. We can no longer take the ocean for granted if we want future generations to have the chance to revel in its wonders, instead of wondering what’s been lost. Read more about how climate change is impacting the ocean.

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World Environment Day

Plastic pollution permeates every corner of the planet, damaging soil, poisoning groundwater and harming living creatures. World Environment Day 2025 calls for collective action to tackle plastic pollution. It comes exactly two months before countries meet again to continue negotiating a global treaty to end plastic pollution – tackling the full life cycle of plastics, from production to use and waste management. Learn more about how plastics impact our planet.

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World Bicycle Day

Everyone can help limit climate change. From the way we travel, to the electricity we use, the food we eat, and the things we buy, we can make a difference. The world’s roadways are clogged with vehicles, most of them burning diesel or gasoline. Walking or riding a bike instead of driving will reduce greenhouse gas emissions — and help your health and fitness.

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International Day for Biological Diversity

Climate change and biodiversity loss (together with pollution) are part of an interlinked triple planetary crisis the world is facing today. They need to be tackled together if we are to advance the Sustainable Development Goals (SDGs) and secure a livable future on this planet.

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Climate Weeks 2025

The Dialogues for Ambition and Implementation will bring together representatives of Parties and non-Party stakeholders in a global space, offering a unique opportunity to link the intergovernmental process and the discussions that will feed into COP with the real needs of implementation, enabling the consolidation of activities to increase efficiency and impact.

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World Migratory Bird Day

Migratory birds are vital to healthy ecosystems, but human activities and urban development are increasingly disrupting their habitats and increasing risks like fatal collisions with buildings. World Migratory Bird Day 2025 emphasises the need for strategic urban planning and conservation efforts to promote a healthy coexistence between humans and birds and protect biodiversity. Every community - from bustling cities to smaller towns - can do their part to support migratory birds.

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International Mother Earth Day

From extreme heat and rising sea levels to biodiversity loss and pollution, Mother Earth is in peril and making a clear call to all of us to take urgent climate action.

On Earth Day, speak up and take action to influence change and help save our planet with the UN's ActNow campaign.

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World Health Day

Climate change is one of the biggest health threats facing humanity. Air pollution, disease, extreme weather events, forced displacement, food insecurity and pressures on mental health are already harming health. Estimates indicate that the overall value of health gains from climate action would be approximately twice the cost of global policies to cut greenhouse gas emissions.

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International Day of Zero Waste

Waste of all kinds contributes to the triple planetary crisis of climate change, biodiversity loss, and pollution. But options exist for living more sustainably. On the International Day of Zero Waste, learn about what others are doing in their communities and how you can join them in taking action for the planet.

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LDC Future Forum 2025

The Third LDC Future Forum will focus on enhancing the resilience of Least Developed Countries (LDCs) to systemic shocks, including the adverse effects of climate change and other global crises. The forum will convene policy-makers, researchers, the private sector, and other stakeholders to share concrete innovative solutions and practical policy recommendations aimed at enhancing the resilience of LDCs.

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