(Office of Emergency Management)...
... has issued a Guide to help New Yorkers and visitors cope with the heat wave that is currently sweeping over the U.S.A. (up to 125°F/51.6°C in Nevada) : "On warm summer days, New York City can be as much as 10 degrees warmer than surrounding areas. Ready New York : Beat the Heat offers tips on how to stay healthy and cool during the summer months, conserve water and energy, and identify and treat individuals with heat-related illnesses"
To access the 2 PDF pages,
click on the Guide ⇓ cover below
The Guide explains that "New York City can be as much as 10 degrees warmer than surrounding areas because the city’s infrastructure – largely made up of asphalt, concrete, and metal – traps the heat." It aims at having you understand the risk factors so as to plan ahead : prevent or treat heat strokes (or sunstrokes) and heat exhaustion / conserve your energy / save resources in extreme heat / prepare for possible power outages and disruptions / etc...