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

Freetown Nairobi Lagos Mexico City Auckland Hangzhou Oslo Istanbul Seattle Stockholm Amman Cape Town Medellín Ekurhuleni Vancouver Warsaw Nanjing Phoenix Heidelberg Lisbon Salvador Johannesburg Mumbai Dalian Miami Santiago Fortaleza Los Angeles Tokyo Chennai Dakar Bengaluru Quezon City Freetown Nairobi Lagos Mexico City Auckland Hangzhou Oslo Istanbul Seattle Stockholm Amman Cape Town Medellín Ekurhuleni Vancouver Warsaw Nanjing Phoenix Heidelberg Lisbon Salvador Johannesburg Mumbai Dalian Miami Santiago Fortaleza Los Angeles Tokyo Chennai Dakar Bengaluru Quezon City

Washington, DC San Francisco Austin Athens Zhenjiang Seoul Qingdao Berlin Madrid Hanoi Tshwane Accra Ho Chi Minh City London Kuala Lumpur Milan Curitiba New York City Toronto Guadalajara Lima Sydney Bangkok Addis Ababa São Paulo Guangzhou Philadelphia Buenos Aires Durban (eThekwini) Shanghai Tel Aviv – Yafo Hong Kong Houston Washington, DC San Francisco Austin Athens Zhenjiang Seoul Qingdao Berlin Madrid Hanoi Tshwane Accra Ho Chi Minh City London Kuala Lumpur Milan Curitiba New York City Toronto Guadalajara Lima Sydney Bangkok Addis Ababa São Paulo Guangzhou Philadelphia Buenos Aires Durban (eThekwini) Shanghai Tel Aviv – Yafo Hong Kong Houston

Fuzhou Shenzhen Singapore Chengdu Beijing Rome Delhi NCT Dar es Salaam Dubai Copenhagen Melbourne Quito New Orleans Portland Rio de Janeiro Chicago Rotterdam Ahmedabad Karachi Wuhan Abidjan Boston Bogotá Dhaka (North & South) Yokohama Amsterdam Jakarta Barcelona Paris Montréal Casablanca Fuzhou Shenzhen Singapore Chengdu Beijing Rome Delhi NCT Dar es Salaam Dubai Copenhagen Melbourne Quito New Orleans Portland Rio de Janeiro Chicago Rotterdam Ahmedabad Karachi Wuhan Abidjan Boston Bogotá Dhaka (North & South) Yokohama Amsterdam Jakarta Barcelona Paris Montréal Casablanca