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

Houston Dhaka (North & South) Barcelona Cape Town Shenzhen Montréal Casablanca Accra Quezon City Hanoi Lisbon Berlin Chennai Rio de Janeiro Bengaluru Dubai Portland Chicago Bangkok Hangzhou Rome New Orleans Stockholm New York City Dalian Istanbul Toronto Boston Ho Chi Minh City Ahmedabad Guadalajara Qingdao Copenhagen Houston Dhaka (North & South) Barcelona Cape Town Shenzhen Montréal Casablanca Accra Quezon City Hanoi Lisbon Berlin Chennai Rio de Janeiro Bengaluru Dubai Portland Chicago Bangkok Hangzhou Rome New Orleans Stockholm New York City Dalian Istanbul Toronto Boston Ho Chi Minh City Ahmedabad Guadalajara Qingdao Copenhagen

Kuala Lumpur Quito Lagos Medellín Jakarta Philadelphia Sydney Melbourne Nanjing Rotterdam Los Angeles Heidelberg Phoenix Curitiba San Francisco Chengdu Amman Guangzhou Tshwane Vancouver Dar es Salaam Tokyo Delhi NCT Miami Beijing Freetown Buenos Aires Yokohama Durban (eThekwini) Washington, DC Fortaleza Oslo Tel Aviv – Yafo Kuala Lumpur Quito Lagos Medellín Jakarta Philadelphia Sydney Melbourne Nanjing Rotterdam Los Angeles Heidelberg Phoenix Curitiba San Francisco Chengdu Amman Guangzhou Tshwane Vancouver Dar es Salaam Tokyo Delhi NCT Miami Beijing Freetown Buenos Aires Yokohama Durban (eThekwini) Washington, DC Fortaleza Oslo Tel Aviv – Yafo

Santiago Warsaw Seattle London Abidjan Zhenjiang Mexico City Austin Addis Ababa Auckland Hong Kong Amsterdam Madrid Nairobi Johannesburg Lima São Paulo Singapore Salvador Dakar Karachi Athens Seoul Bogotá Paris Milan Shanghai Fuzhou Ekurhuleni Mumbai Wuhan Santiago Warsaw Seattle London Abidjan Zhenjiang Mexico City Austin Addis Ababa Auckland Hong Kong Amsterdam Madrid Nairobi Johannesburg Lima São Paulo Singapore Salvador Dakar Karachi Athens Seoul Bogotá Paris Milan Shanghai Fuzhou Ekurhuleni Mumbai Wuhan