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

New York City Chicago Santiago Amsterdam Shenzhen Curitiba Mexico City Houston Delhi NCT Warsaw Nairobi Heidelberg Lisbon Istanbul Fuzhou Tshwane Los Angeles Kolkata Yokohama Vancouver Madrid Portland Montréal Dar es Salaam New Orleans Beijing Freetown Boston Johannesburg Bangkok Melbourne Ho Chi Minh City New York City Chicago Santiago Amsterdam Shenzhen Curitiba Mexico City Houston Delhi NCT Warsaw Nairobi Heidelberg Lisbon Istanbul Fuzhou Tshwane Los Angeles Kolkata Yokohama Vancouver Madrid Portland Montréal Dar es Salaam New Orleans Beijing Freetown Boston Johannesburg Bangkok Melbourne Ho Chi Minh City

Copenhagen Phoenix Chengdu Hanoi Dalian Bengaluru Seoul Durban (eThekwini) Philadelphia Rio de Janeiro Rome Auckland Accra Dakar Seattle Rotterdam Milan London Lima Ahmedabad Nanjing Berlin Hangzhou Austin Abidjan Hong Kong Lagos Sydney Guangzhou Oslo Wuhan Mumbai Copenhagen Phoenix Chengdu Hanoi Dalian Bengaluru Seoul Durban (eThekwini) Philadelphia Rio de Janeiro Rome Auckland Accra Dakar Seattle Rotterdam Milan London Lima Ahmedabad Nanjing Berlin Hangzhou Austin Abidjan Hong Kong Lagos Sydney Guangzhou Oslo Wuhan Mumbai

Medellín Toronto Quezon City Barcelona Guadalajara Karachi Ekurhuleni Shanghai San Francisco Buenos Aires Qingdao Bogotá Tokyo Dubai Salvador Miami Cape Town Jakarta Paris Washington, DC Athens Dhaka (North & South) Quito Chennai Tel Aviv – Yafo Singapore Kuala Lumpur Amman Addis Ababa Zhenjiang São Paulo Stockholm Medellín Toronto Quezon City Barcelona Guadalajara Karachi Ekurhuleni Shanghai San Francisco Buenos Aires Qingdao Bogotá Tokyo Dubai Salvador Miami Cape Town Jakarta Paris Washington, DC Athens Dhaka (North & South) Quito Chennai Tel Aviv – Yafo Singapore Kuala Lumpur Amman Addis Ababa Zhenjiang São Paulo Stockholm