The 2016 Heat Action Plan is an updated version of the first comprehensive early warning system and preparedness plan for extreme heat events in India launched in Ahmedabad in 2013. The Plan creates immediate and longer-term actions to increase preparedness, information-sharing, and response coordination to reduce the health impacts of extreme heat on vulnerable populations. This Heat Action Plan aims to provide a framework for the implementation, coordination, and evaluation of extreme heat response activities in Ahmedabad that reduce the negative health impacts of extreme heat. The Plan’s primary objective is to alert those populations most at risk of heat-related illness that extreme heat conditions either exist or are imminent, and to take appropriate precautions.