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

Dalian New York City Warsaw Quezon City Guangzhou Qingdao Buenos Aires Quito Beijing Wuhan Seoul Tel Aviv – Yafo Portland Austin New Orleans Amsterdam Barcelona Heidelberg Los Angeles Fuzhou Toronto Fortaleza Dubai Tokyo Paris Medellín Miami Copenhagen Oslo Karachi Durban (eThekwini) Shanghai Istanbul Dalian New York City Warsaw Quezon City Guangzhou Qingdao Buenos Aires Quito Beijing Wuhan Seoul Tel Aviv – Yafo Portland Austin New Orleans Amsterdam Barcelona Heidelberg Los Angeles Fuzhou Toronto Fortaleza Dubai Tokyo Paris Medellín Miami Copenhagen Oslo Karachi Durban (eThekwini) Shanghai Istanbul

Casablanca Curitiba Mexico City Auckland Chennai Amman Accra London Bengaluru Rotterdam Salvador Bogotá Stockholm Ho Chi Minh City Zhenjiang Mumbai Melbourne Ekurhuleni Seattle Cape Town Hanoi San Francisco Phoenix Yokohama Shenzhen Lima Rio de Janeiro Guadalajara Santiago Jakarta Dakar Houston Ahmedabad Casablanca Curitiba Mexico City Auckland Chennai Amman Accra London Bengaluru Rotterdam Salvador Bogotá Stockholm Ho Chi Minh City Zhenjiang Mumbai Melbourne Ekurhuleni Seattle Cape Town Hanoi San Francisco Phoenix Yokohama Shenzhen Lima Rio de Janeiro Guadalajara Santiago Jakarta Dakar Houston Ahmedabad

Washington, DC Dar es Salaam Milan Hong Kong Delhi NCT Nanjing Johannesburg Addis Ababa Lisbon Hangzhou Freetown Tshwane Nairobi Montréal Athens Rome Bangkok Chicago Chengdu Kuala Lumpur Lagos Abidjan Berlin Philadelphia Dhaka (North & South) Sydney Madrid São Paulo Vancouver Singapore Boston Washington, DC Dar es Salaam Milan Hong Kong Delhi NCT Nanjing Johannesburg Addis Ababa Lisbon Hangzhou Freetown Tshwane Nairobi Montréal Athens Rome Bangkok Chicago Chengdu Kuala Lumpur Lagos Abidjan Berlin Philadelphia Dhaka (North & South) Sydney Madrid São Paulo Vancouver Singapore Boston