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

Boston Hong Kong Copenhagen Shenzhen Curitiba Seoul Dakar Cape Town Durban (eThekwini) Houston Quito Philadelphia New York City New Orleans Auckland Oslo Ekurhuleni Lagos Austin Seattle Amsterdam Accra Santiago Beijing Hanoi Bangkok San Francisco Lima Heidelberg Paris Mumbai Medellín London Boston Hong Kong Copenhagen Shenzhen Curitiba Seoul Dakar Cape Town Durban (eThekwini) Houston Quito Philadelphia New York City New Orleans Auckland Oslo Ekurhuleni Lagos Austin Seattle Amsterdam Accra Santiago Beijing Hanoi Bangkok San Francisco Lima Heidelberg Paris Mumbai Medellín London

Quezon City Washington, DC Madrid Bengaluru Addis Ababa São Paulo Dalian Casablanca Athens Istanbul Abidjan Yokohama Melbourne Ahmedabad Guangzhou Chicago Montréal Phoenix Portland Stockholm Rotterdam Barcelona Tel Aviv – Yafo Vancouver Wuhan Zhenjiang Freetown Salvador Buenos Aires Ho Chi Minh City Delhi NCT Berlin Nairobi Quezon City Washington, DC Madrid Bengaluru Addis Ababa São Paulo Dalian Casablanca Athens Istanbul Abidjan Yokohama Melbourne Ahmedabad Guangzhou Chicago Montréal Phoenix Portland Stockholm Rotterdam Barcelona Tel Aviv – Yafo Vancouver Wuhan Zhenjiang Freetown Salvador Buenos Aires Ho Chi Minh City Delhi NCT Berlin Nairobi

Amman Mexico City Chennai Singapore Dhaka (North & South) Rio de Janeiro Fortaleza Bogotá Fuzhou Chengdu Johannesburg Jakarta Warsaw Rome Milan Dubai Hangzhou Lisbon Sydney Tshwane Toronto Tokyo Nanjing Shanghai Dar es Salaam Kuala Lumpur Guadalajara Karachi Miami Qingdao Los Angeles Amman Mexico City Chennai Singapore Dhaka (North & South) Rio de Janeiro Fortaleza Bogotá Fuzhou Chengdu Johannesburg Jakarta Warsaw Rome Milan Dubai Hangzhou Lisbon Sydney Tshwane Toronto Tokyo Nanjing Shanghai Dar es Salaam Kuala Lumpur Guadalajara Karachi Miami Qingdao Los Angeles