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

Chicago Dakar Mexico City Quito Stockholm Rotterdam Chengdu Berlin Lima Austin Casablanca Rome São Paulo Wuhan Abidjan Toronto Philadelphia Cape Town Curitiba Dhaka (North & South) Quezon City Houston Kuala Lumpur Phoenix Guadalajara Qingdao Warsaw San Francisco Heidelberg Karachi Melbourne Fuzhou Miami Chicago Dakar Mexico City Quito Stockholm Rotterdam Chengdu Berlin Lima Austin Casablanca Rome São Paulo Wuhan Abidjan Toronto Philadelphia Cape Town Curitiba Dhaka (North & South) Quezon City Houston Kuala Lumpur Phoenix Guadalajara Qingdao Warsaw San Francisco Heidelberg Karachi Melbourne Fuzhou Miami

Amsterdam Medellín Singapore Hong Kong Barcelona Ekurhuleni Santiago Los Angeles Seattle London Accra Lisbon Guangzhou Dubai Hanoi Durban (eThekwini) Salvador Madrid Seoul Johannesburg Copenhagen Boston Amman Zhenjiang Bogotá Jakarta Chennai Portland Nairobi New York City Vancouver Yokohama Oslo Amsterdam Medellín Singapore Hong Kong Barcelona Ekurhuleni Santiago Los Angeles Seattle London Accra Lisbon Guangzhou Dubai Hanoi Durban (eThekwini) Salvador Madrid Seoul Johannesburg Copenhagen Boston Amman Zhenjiang Bogotá Jakarta Chennai Portland Nairobi New York City Vancouver Yokohama Oslo

Athens Mumbai Milan New Orleans Tel Aviv – Yafo Shenzhen Nanjing Tshwane Bengaluru Rio de Janeiro Sydney Tokyo Dalian Beijing Ho Chi Minh City Shanghai Lagos Fortaleza Ahmedabad Buenos Aires Auckland Bangkok Freetown Addis Ababa Hangzhou Dar es Salaam Istanbul Montréal Paris Washington, DC Delhi NCT Athens Mumbai Milan New Orleans Tel Aviv – Yafo Shenzhen Nanjing Tshwane Bengaluru Rio de Janeiro Sydney Tokyo Dalian Beijing Ho Chi Minh City Shanghai Lagos Fortaleza Ahmedabad Buenos Aires Auckland Bangkok Freetown Addis Ababa Hangzhou Dar es Salaam Istanbul Montréal Paris Washington, DC Delhi NCT