A man sits in front of a fountain at Washington Square Park during a heatwave in New York, the United States, on June 29, 2021. New York City is gripped by multi-day scorching heat and humidity as much of the East Coast is expected to see temperatures top 90 degrees Fahrenheit (about 32 degrees Celsius) until Wednesday. (Photos: Michael Nagle/Xinhua)

A heart-shaped sweat mark is seen on a man's shirt during a heatwave in New York, the United States, on June 29, 2021. New York City is gripped by multi-day scorching heat and humidity as much of the East Coast is expected to see temperatures top 90 degrees Fahrenheit (about 32 degrees Celsius) until Wednesday.

Children cool off in a fountain during a heatwave in the Brooklyn borough of New York, the United States, on June 29, 2021. New York City is gripped by multi-day scorching heat and humidity as much of the East Coast is expected to see temperatures top 90 degrees Fahrenheit (about 32 degrees Celsius) until Wednesday.