Climate change in New York City

Climate change in New York City could affect buildings and infrastructure, wetlands, water supply, public health, and energy demand, due to the high population and extensive infrastructure in the region. As a seaport, New York is especially at risk from rising sea levels due to its many bridges and tunnels. Major aviation facilities in the New York metropolitan area, along with the New York Passenger Ship Terminal, are also located in areas vulnerable to flooding. Flooding would be costly to remediate. Tide gauge records indicate a rise in sea level of about 50 cm (20 inches) since 1860.

Rising temperatures could increase the risk of heat-related deaths during heat waves and increased concentrations of ground-level ozone (potentially causing asthma and other health concerns). The New York Times identified climate change as a contributing factor in the city's rising rat infestation, stating that "[m]ilder winters — the result of climate change — make it easier for rats to survive and reproduce".

In June 2019, New York City declared a climate emergency .