The city entered its sixth day of grueling heat Tuesday — the first time the Big Apple has had more than a week of 90-plus degrees in nearly 15 years.

“It’s common to get a few stretches of 90 degrees or higher, but usually something causes a break like a thunderstorm or cloud cover. It’s unusual to get a week or more consecutively, even in some of our hotter summers,” said Accuweather senior meteorologist Brian Wimer.

The last time New York had more than a week of extreme heat was in 2002, a particularly hot summer that featured two different stretches of more than a week’s worth of unrelenting 90+ degree temps, Wimer noted.

Part of what has made this week so warm is a high-pressure “heat dome,” a meteorological phenomenon that’s been trapping hot air near the surface since last Thursday, covering a large swath of the country from Texas up to Maine.

Meteorologists said Monday’s flash thunderstorm in the city that brought monsoon-like rain wasn’t enough to burst the dome, which will likely dissipate by Friday.

Tuesday was another sluggish schlep for New Yorkers, who continued to battle hard-to-breathe subway platforms and the sweltering sun that pushed temperatures up to 94 degrees.

“Pretty sure my earbuds melted into my eardrums waiting on the subway platform this am,” @jkatcher74 tweeted.

Wednesday and Thursday are both expected to hit 91 degrees.

Temperatures on Friday will drop to the mid-80s, but the humidity might linger through the weekend.

“It isn’t going to be as oppressive, but it won’t be refreshing by any means,” Wimer said.