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

Athens Chicago Ahmedabad Dalian Beijing Vancouver Boston Johannesburg Seattle Mumbai Bogotá Auckland Salvador Istanbul Shanghai Qingdao Dubai Barcelona Quezon City San Francisco Seoul Stockholm Hong Kong Wuhan Santiago Addis Ababa Curitiba Nairobi Hangzhou Milan Chennai Chengdu Portland Athens Chicago Ahmedabad Dalian Beijing Vancouver Boston Johannesburg Seattle Mumbai Bogotá Auckland Salvador Istanbul Shanghai Qingdao Dubai Barcelona Quezon City San Francisco Seoul Stockholm Hong Kong Wuhan Santiago Addis Ababa Curitiba Nairobi Hangzhou Milan Chennai Chengdu Portland

Amman Durban (eThekwini) Buenos Aires New York City Phoenix Singapore Los Angeles Montréal Warsaw Hanoi Austin Lisbon Accra London Rome Cape Town Madrid Ho Chi Minh City Rio de Janeiro Freetown Kuala Lumpur Yokohama Heidelberg Jakarta Ekurhuleni Fuzhou Miami Toronto Rotterdam Berlin Mexico City New Orleans Dakar Amman Durban (eThekwini) Buenos Aires New York City Phoenix Singapore Los Angeles Montréal Warsaw Hanoi Austin Lisbon Accra London Rome Cape Town Madrid Ho Chi Minh City Rio de Janeiro Freetown Kuala Lumpur Yokohama Heidelberg Jakarta Ekurhuleni Fuzhou Miami Toronto Rotterdam Berlin Mexico City New Orleans Dakar

Medellín Sydney Dhaka (North & South) Shenzhen Karachi Guadalajara Dar es Salaam Lima Zhenjiang Houston Copenhagen Casablanca Tel Aviv – Yafo Guangzhou Lagos Tokyo Tshwane Bangkok Delhi NCT Abidjan Washington, DC Philadelphia Oslo Melbourne Bengaluru Fortaleza Quito São Paulo Amsterdam Nanjing Paris Medellín Sydney Dhaka (North & South) Shenzhen Karachi Guadalajara Dar es Salaam Lima Zhenjiang Houston Copenhagen Casablanca Tel Aviv – Yafo Guangzhou Lagos Tokyo Tshwane Bangkok Delhi NCT Abidjan Washington, DC Philadelphia Oslo Melbourne Bengaluru Fortaleza Quito São Paulo Amsterdam Nanjing Paris