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

Milan Chicago New Orleans Johannesburg Boston Nanjing Hanoi Wuhan Montréal Lima Guadalajara Chennai Paris Copenhagen São Paulo Oslo Dubai Shenzhen Toronto Mumbai Abidjan Hong Kong Los Angeles Amsterdam Bangkok Portland Dhaka (North & South) Stockholm Singapore Washington, DC Melbourne Ahmedabad Milan Chicago New Orleans Johannesburg Boston Nanjing Hanoi Wuhan Montréal Lima Guadalajara Chennai Paris Copenhagen São Paulo Oslo Dubai Shenzhen Toronto Mumbai Abidjan Hong Kong Los Angeles Amsterdam Bangkok Portland Dhaka (North & South) Stockholm Singapore Washington, DC Melbourne Ahmedabad

Cape Town Quito Athens Medellín Freetown Guangzhou Madrid Seoul Durban (eThekwini) Austin Tel Aviv – Yafo Istanbul Tokyo Barcelona Addis Ababa Kuala Lumpur Sydney Karachi Berlin Bengaluru San Francisco London Fuzhou Amman Buenos Aires Dar es Salaam Salvador Phoenix Curitiba Kolkata Seattle Jakarta Cape Town Quito Athens Medellín Freetown Guangzhou Madrid Seoul Durban (eThekwini) Austin Tel Aviv – Yafo Istanbul Tokyo Barcelona Addis Ababa Kuala Lumpur Sydney Karachi Berlin Bengaluru San Francisco London Fuzhou Amman Buenos Aires Dar es Salaam Salvador Phoenix Curitiba Kolkata Seattle Jakarta

Philadelphia Quezon City Lagos Mexico City Santiago Ho Chi Minh City Bogotá Ekurhuleni Vancouver Yokohama Warsaw Dakar Rome Lisbon Beijing Shanghai Chengdu Miami Auckland Hangzhou Houston Dalian Heidelberg Rio de Janeiro Rotterdam Tshwane Delhi NCT New York City Accra Zhenjiang Nairobi Qingdao Philadelphia Quezon City Lagos Mexico City Santiago Ho Chi Minh City Bogotá Ekurhuleni Vancouver Yokohama Warsaw Dakar Rome Lisbon Beijing Shanghai Chengdu Miami Auckland Hangzhou Houston Dalian Heidelberg Rio de Janeiro Rotterdam Tshwane Delhi NCT New York City Accra Zhenjiang Nairobi Qingdao