NEW YORK CITY — Man, it's a hot one, like seven inches from the midday sun.
The National Weather Service issued a heat advisory through 8 p.m. Thursday as the mercury is expected to shoot up to the 90s and stay that way.
Temperatures on Wednesday should hit 91 degrees before dipping to only 76 degrees overnight, according to the NWS.
But humidity will hang around 74 percent and make it feel significantly hotter, forecasters said.
David Feuerman, 38, was on his way to the High Line Wednesday afternoon when he decided to take a detour into Washing Square park to cool off in the fountain.
"I'm so tired from the heat," Feuerman said. "We really should have more fountains."
Thursday won't see much improvement, climbing again to a stormy 93 degrees, forecasters said.
"Hot and humid conditions will increase the risk for heat-related health issues. This is especially so for the elderly and those working outdoors," the NWS warned in its heat advisory.
While there had been no heat-related injuries as of 1:30 p.m. Wednesday, the city urged people to be careful about outdoor physical activity and to stay hydrated.
There were 13 heatstroke-related deaths last year, city officials said.
"Heat is a silent killer," city officials warned Wednesday.
The city's cooling centers are now open. To find the one closest to you, check here or call 311.
The heat is particularly problematic for babies and young children as well as those with respiratory problems, experts said.
Ronnie Rossi, 77, traveled down from The Bronx to Washington Square Park to bask in the sun's rays.
"The only time you see me move is when the sun moves," said Rossi, who was relaxing on a beach chair with a spray bottle full of cool water, sun screen and lip balm.
"I'm 77, but I'm not worried about a heat stroke because I stay hydrated."
Conditions should improve, but not by much, come Friday with temperatures in the 80s that'll stay through Sunday, forecasters said.
In the meantime, pollution is also expected to spike so the weather service also issued an air quality alert for the city.
Ground level ozone levels are expected to approach or exceed unhealthy standards on Wednesday. pic.twitter.com/I5mHAkH1v3— NWS New York NY (@NWSNewYorkNY) July 5, 2016
Con Ed also asked its customers to try to reduce their own electrical use during the warmer hours of the day and to turn off air conditioners when they're not home.
Ethel Dichter, 93, said she was taken by surprise by the heat as she strolled the streets of Greenwich Village in black pants and a blue cardigan.
"I just want to go upstairs and change, put on something else," Dichter said. "This old lady is going to go home and put on a bikini."