The Global Climate Action Summit was held September 12–14, 2018 at the Moscone Convention Center in San Francisco, California. Hosted by California Governor and co-founder of the Under2 Coalition and America's Pledge, Jerry Brown, the summit aimed to address climate change by bringing together non-state actors and elected leaders at the state and local level. The summit was also co-chaired by the UN Secretary General’s Special Envoy for Climate Action, Michael Bloomberg; the Chairman of the Mahindra Group, Anand Mahindra; and the Executive Secretary of UN Climate Change, Patricia Espinosa.