C40 is a global network of mayors of the world’s leading cities that are united in action to confront the climate crisis.

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Rotterdam Buenos Aires Delhi NCT Zhenjiang Singapore New York City Santiago Hanoi Salvador Cape Town Qingdao Amman Ahmedabad Tokyo Houston Austin Medellín Shanghai Madrid Montréal Vancouver Chengdu Auckland Mexico City Stockholm Ho Chi Minh City Nanjing Rome Shenzhen Portland Casablanca Jakarta Washington, DC Rotterdam Buenos Aires Delhi NCT Zhenjiang Singapore New York City Santiago Hanoi Salvador Cape Town Qingdao Amman Ahmedabad Tokyo Houston Austin Medellín Shanghai Madrid Montréal Vancouver Chengdu Auckland Mexico City Stockholm Ho Chi Minh City Nanjing Rome Shenzhen Portland Casablanca Jakarta Washington, DC

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