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

Guadalajara Curitiba Quezon City São Paulo London Singapore Chennai Miami Yokohama Amman Washington, DC Hangzhou Milan Chengdu Lagos Dakar Auckland Portland Madrid Karachi Durban (eThekwini) Casablanca Copenhagen Jakarta Istanbul Warsaw Rotterdam Mexico City Abidjan Vancouver Dubai Qingdao Salvador Guadalajara Curitiba Quezon City São Paulo London Singapore Chennai Miami Yokohama Amman Washington, DC Hangzhou Milan Chengdu Lagos Dakar Auckland Portland Madrid Karachi Durban (eThekwini) Casablanca Copenhagen Jakarta Istanbul Warsaw Rotterdam Mexico City Abidjan Vancouver Dubai Qingdao Salvador

Heidelberg Guangzhou Bangkok Rome Hanoi Dar es Salaam Melbourne Rio de Janeiro Freetown Seattle Fortaleza Addis Ababa Dhaka (North & South) Shanghai Berlin Toronto Barcelona Austin Dalian Accra Bengaluru Lima Montréal Lisbon Medellín New York City Phoenix Santiago Quito Buenos Aires Oslo Houston Ekurhuleni Heidelberg Guangzhou Bangkok Rome Hanoi Dar es Salaam Melbourne Rio de Janeiro Freetown Seattle Fortaleza Addis Ababa Dhaka (North & South) Shanghai Berlin Toronto Barcelona Austin Dalian Accra Bengaluru Lima Montréal Lisbon Medellín New York City Phoenix Santiago Quito Buenos Aires Oslo Houston Ekurhuleni

Paris Boston Seoul Nanjing Beijing Zhenjiang Wuhan Tshwane Cape Town Amsterdam Kuala Lumpur Nairobi Chicago Tokyo Ahmedabad Ho Chi Minh City Johannesburg Athens Delhi NCT Los Angeles Philadelphia Shenzhen San Francisco Mumbai Sydney Tel Aviv – Yafo New Orleans Fuzhou Hong Kong Stockholm Bogotá Paris Boston Seoul Nanjing Beijing Zhenjiang Wuhan Tshwane Cape Town Amsterdam Kuala Lumpur Nairobi Chicago Tokyo Ahmedabad Ho Chi Minh City Johannesburg Athens Delhi NCT Los Angeles Philadelphia Shenzhen San Francisco Mumbai Sydney Tel Aviv – Yafo New Orleans Fuzhou Hong Kong Stockholm Bogotá