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

Chicago Hanoi Tshwane Oslo Lagos Santiago Fuzhou Shenzhen Buenos Aires São Paulo Los Angeles Lima Nanjing Madrid Salvador Kuala Lumpur Hangzhou Delhi NCT Guangzhou Zhenjiang Quito Dalian Karachi Fortaleza Qingdao Abidjan Copenhagen Singapore Bangkok Heidelberg Ahmedabad Bengaluru Hong Kong Chicago Hanoi Tshwane Oslo Lagos Santiago Fuzhou Shenzhen Buenos Aires São Paulo Los Angeles Lima Nanjing Madrid Salvador Kuala Lumpur Hangzhou Delhi NCT Guangzhou Zhenjiang Quito Dalian Karachi Fortaleza Qingdao Abidjan Copenhagen Singapore Bangkok Heidelberg Ahmedabad Bengaluru Hong Kong

Rio de Janeiro Tokyo Rome Rotterdam Yokohama Curitiba Miami Nairobi San Francisco Dhaka (North & South) Freetown Paris Medellín Guadalajara New Orleans Seattle Phoenix Athens Addis Ababa Amsterdam New York City Seoul Toronto Johannesburg Amman Stockholm Cape Town Durban (eThekwini) Dar es Salaam London Milan Ekurhuleni Austin Rio de Janeiro Tokyo Rome Rotterdam Yokohama Curitiba Miami Nairobi San Francisco Dhaka (North & South) Freetown Paris Medellín Guadalajara New Orleans Seattle Phoenix Athens Addis Ababa Amsterdam New York City Seoul Toronto Johannesburg Amman Stockholm Cape Town Durban (eThekwini) Dar es Salaam London Milan Ekurhuleni Austin

Shanghai Philadelphia Mumbai Warsaw Sydney Tel Aviv – Yafo Beijing Dubai Chennai Vancouver Istanbul Wuhan Quezon City Houston Melbourne Mexico City Lisbon Jakarta Barcelona Dakar Montréal Portland Ho Chi Minh City Chengdu Accra Bogotá Casablanca Auckland Washington, DC Boston Berlin Shanghai Philadelphia Mumbai Warsaw Sydney Tel Aviv – Yafo Beijing Dubai Chennai Vancouver Istanbul Wuhan Quezon City Houston Melbourne Mexico City Lisbon Jakarta Barcelona Dakar Montréal Portland Ho Chi Minh City Chengdu Accra Bogotá Casablanca Auckland Washington, DC Boston Berlin