By 2080, the number of hot days in New York City is expected to triple. As many as 3,331 people could die from heat exposure every summer in New York City, if no steps are taken to adapt to climate change and reduce emissions. 
This warning comes from a new study from Columbia University published in Environmental Health Perspectives. 
The study analyzed the effects of future climate change on New York using data from 33 global climate models, and included estimates greenhouse gas emission trajectories, migration to the city, future population sizes, and demographics (since the elderly and very young are especially vulnerable to heat events). 
It also looked at the availability of air conditioning and public cooling centers.

Source: QNA