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

Stockholm Seattle Tokyo Chicago Wuhan Milan Bangkok Montréal Shenzhen Bengaluru Istanbul Bogotá Freetown Berlin Los Angeles Abidjan Oslo Casablanca Rome Chengdu Ho Chi Minh City Delhi NCT Durban (eThekwini) Paris Philadelphia Dubai Tel Aviv – Yafo Johannesburg New Orleans Amsterdam Dhaka (North & South) Auckland Mumbai Stockholm Seattle Tokyo Chicago Wuhan Milan Bangkok Montréal Shenzhen Bengaluru Istanbul Bogotá Freetown Berlin Los Angeles Abidjan Oslo Casablanca Rome Chengdu Ho Chi Minh City Delhi NCT Durban (eThekwini) Paris Philadelphia Dubai Tel Aviv – Yafo Johannesburg New Orleans Amsterdam Dhaka (North & South) Auckland Mumbai

Guadalajara Qingdao Lisbon Jakarta Barcelona Miami Kuala Lumpur New York City Dar es Salaam Hanoi Portland Salvador Warsaw Fortaleza Copenhagen Fuzhou Heidelberg Ekurhuleni Curitiba Phoenix Vancouver Washington, DC Houston Santiago Boston Karachi Ahmedabad Athens Amman Medellín Addis Ababa Lima Madrid Guadalajara Qingdao Lisbon Jakarta Barcelona Miami Kuala Lumpur New York City Dar es Salaam Hanoi Portland Salvador Warsaw Fortaleza Copenhagen Fuzhou Heidelberg Ekurhuleni Curitiba Phoenix Vancouver Washington, DC Houston Santiago Boston Karachi Ahmedabad Athens Amman Medellín Addis Ababa Lima Madrid

San Francisco Beijing Sydney Chennai Singapore Guangzhou Seoul Yokohama Nairobi London Cape Town Toronto Buenos Aires Lagos Shanghai Hong Kong Mexico City Dalian Rio de Janeiro São Paulo Zhenjiang Rotterdam Dakar Quito Hangzhou Accra Nanjing Quezon City Austin Tshwane Melbourne San Francisco Beijing Sydney Chennai Singapore Guangzhou Seoul Yokohama Nairobi London Cape Town Toronto Buenos Aires Lagos Shanghai Hong Kong Mexico City Dalian Rio de Janeiro São Paulo Zhenjiang Rotterdam Dakar Quito Hangzhou Accra Nanjing Quezon City Austin Tshwane Melbourne