Thousands of New York City residents lost power on Thursday as a heat wave continued to grip the city, Con Edison said.

As of late Thursday afternoon, more than 4,200 Con Edison customers were without power in the greater New York City area, including approximately 1,060 in the Allerton section of the Bronx, nearly 2,900 in the Country Club and Locust Point sections of the Bronx and around 100 in Brooklyn, according to the utility company’s outage map. 

By 5 p.m., approximately 2,480 customers still had no power, including 757 in Allerton, 1,243 in Country Club and Locus Point and approximately 30 in Brooklyn.

More than 500 customer in Astoria, meanwhile, lost power Thursday morning. By 5 p.m., 67 were still without power, with service expected to be restored by 7:30 p.m.

Estimated restoration times varied by location in the Bronx and Brooklyn. 

The company's customer count indicates the number of homes and businesses affected by an outage, not the number of residents affected, it notes on its website.

Earlier in the day on Thursday, Con Edison asked tens of thousands of central Queens residents to limit their power usage due to “equipment problems," saying it was reducing voltage in the area by 8% as it made repairs. 

Con Edison issued the request to customers living within the boundaries of “the Long Island Expressway and the Long Island Railroad on the north, the Cross Island Parkway on the east, Grand Central Parkway on the south, and Queens Boulevard on the west.”

By mid-afternoon, the company had restored voltage in the area.  

Thursday’s outages came as a wave of “extreme heat” continued to sweep across the five boroughs.

The National Weather Service earlier this week issued a heat advisory for the city through 8 p.m. on Sunday, and highs on Thursday were expected to be in the mid-90s.