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

Portland Rotterdam Tel Aviv – Yafo Hanoi Johannesburg Salvador Chicago Santiago Berlin Ho Chi Minh City São Paulo Houston Beijing Abidjan Rome Freetown Heidelberg Warsaw Buenos Aires Athens Dalian Hong Kong Fuzhou Hangzhou Karachi Sydney Yokohama Nanjing Phoenix Milan Quezon City Lagos Curitiba Portland Rotterdam Tel Aviv – Yafo Hanoi Johannesburg Salvador Chicago Santiago Berlin Ho Chi Minh City São Paulo Houston Beijing Abidjan Rome Freetown Heidelberg Warsaw Buenos Aires Athens Dalian Hong Kong Fuzhou Hangzhou Karachi Sydney Yokohama Nanjing Phoenix Milan Quezon City Lagos Curitiba

Wuhan Bangkok New Orleans San Francisco Chengdu Quito Dubai Bogotá Fortaleza Vancouver Lisbon Ahmedabad Jakarta Seoul Barcelona Guadalajara Shenzhen Los Angeles Mexico City Seattle Guangzhou Toronto Delhi NCT Lima Tokyo New York City Montréal Copenhagen Austin Qingdao Zhenjiang Bengaluru Nairobi Wuhan Bangkok New Orleans San Francisco Chengdu Quito Dubai Bogotá Fortaleza Vancouver Lisbon Ahmedabad Jakarta Seoul Barcelona Guadalajara Shenzhen Los Angeles Mexico City Seattle Guangzhou Toronto Delhi NCT Lima Tokyo New York City Montréal Copenhagen Austin Qingdao Zhenjiang Bengaluru Nairobi

Madrid Dar es Salaam Accra Paris Casablanca Mumbai Singapore Philadelphia Cape Town Durban (eThekwini) Washington, DC Shanghai Melbourne Rio de Janeiro Stockholm Dakar Amman Boston Auckland Ekurhuleni Amsterdam London Addis Ababa Tshwane Miami Medellín Chennai Dhaka (North & South) Kuala Lumpur Istanbul Oslo Madrid Dar es Salaam Accra Paris Casablanca Mumbai Singapore Philadelphia Cape Town Durban (eThekwini) Washington, DC Shanghai Melbourne Rio de Janeiro Stockholm Dakar Amman Boston Auckland Ekurhuleni Amsterdam London Addis Ababa Tshwane Miami Medellín Chennai Dhaka (North & South) Kuala Lumpur Istanbul Oslo