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Raising Climate Ambition

1.5°C Climate Action Plans

C40’s Climate Action Planning programme supports cities around the world to create and implement climate action plans in line with the 1.5°C target of the Paris Agreement.

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High-Impact Declarations

C40 high-impact declarations are statements of political leadership by mayors from around the world. They are based on the most ambitious, science-based targets and lay out concrete delivery milestones, both for mitigation and adaptation.

Learn about all of the declarations and check the latest C40 declaration progress reports below.

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Inclusive & Thriving Cities

In the midst of climate breakdown, mayors are facing multiple interlinked crises, including the COVID-19 pandemic and persisting social injustices. A Global Green New Deal with inclusive climate action at its heart is needed to build thriving communities that work for everyone. 

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Research & Knowledge

C40 provides research, analysis, implementation guides and more to support and empower cities to transition towards a green and just economy where everyone, everywhere, can thrive.

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C40 Cities

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