Tuesday may have reached 79 degrees at Long Island MacArthur Airport, but Wednesday and Thursday are expected to be even warmer.

Under sunny skies, Wednesday is forecast to reach the low 80s and Thursday the mid-80s, the National Weather Service says. Friday, too, is expected to be in the low 80s.

That’s at a time of year when the normal daily high is 68 degrees.

“We’re looking at some pretty nice weather,” News 12 Long Island meteorologist Rich Hoffman said.

Marring this is an alert in effect Wednesday from 10 a.m. to 10 p.m. indicating an elevated level of ozone in the air, meaning it would be wise for people to consider limiting strenuous outdoor activities, according to the New York State Department of Health. The very young and those with respiratory problems should take special care.

Long Island MacArthur Airport was registering 77 degrees shortly before 5 p.m. Tuesday, with west-southwest winds of 11 mph, according to the weather service’s website.

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Temperatures Tuesday were expected to top out near 77 degrees, inching up to 80 degrees Wednesday and 85 on Thursday, according to the weather service.

Hoffman said he expected it would get near 90 degrees Thursday on parts of Long Island, with the warmest temperatures in Nassau County.