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

Phoenix Stockholm Melbourne Ekurhuleni Chennai Istanbul Mumbai Auckland Warsaw Washington, DC Freetown Karachi São Paulo Rome Santiago Athens Yokohama Lima Tshwane Philadelphia Jakarta Guadalajara Wuhan Delhi NCT Fuzhou Rio de Janeiro London Chengdu Portland Medellín Abidjan Kuala Lumpur Qingdao Phoenix Stockholm Melbourne Ekurhuleni Chennai Istanbul Mumbai Auckland Warsaw Washington, DC Freetown Karachi São Paulo Rome Santiago Athens Yokohama Lima Tshwane Philadelphia Jakarta Guadalajara Wuhan Delhi NCT Fuzhou Rio de Janeiro London Chengdu Portland Medellín Abidjan Kuala Lumpur Qingdao

Curitiba Shenzhen Heidelberg Hangzhou Montréal Lagos Amman Tokyo Mexico City Rotterdam Dhaka (North & South) Johannesburg Zhenjiang Toronto Beijing Berlin Ahmedabad Quito Hong Kong Chicago Durban (eThekwini) Amsterdam Casablanca Quezon City Vancouver Bogotá Addis Ababa Los Angeles Nairobi Fortaleza Lisbon Seoul Nanjing Curitiba Shenzhen Heidelberg Hangzhou Montréal Lagos Amman Tokyo Mexico City Rotterdam Dhaka (North & South) Johannesburg Zhenjiang Toronto Beijing Berlin Ahmedabad Quito Hong Kong Chicago Durban (eThekwini) Amsterdam Casablanca Quezon City Vancouver Bogotá Addis Ababa Los Angeles Nairobi Fortaleza Lisbon Seoul Nanjing

Houston San Francisco Tel Aviv – Yafo Dakar Shanghai Cape Town Copenhagen Dubai New Orleans Guangzhou Madrid Sydney Barcelona Austin Bengaluru Hanoi Oslo Dar es Salaam Singapore Buenos Aires Miami Seattle Boston Paris Dalian Milan Ho Chi Minh City Salvador New York City Accra Bangkok Houston San Francisco Tel Aviv – Yafo Dakar Shanghai Cape Town Copenhagen Dubai New Orleans Guangzhou Madrid Sydney Barcelona Austin Bengaluru Hanoi Oslo Dar es Salaam Singapore Buenos Aires Miami Seattle Boston Paris Dalian Milan Ho Chi Minh City Salvador New York City Accra Bangkok