A third day of temperatures in the 90s is on tap for Philadelphia today, and the heat wave isn't on its way out quite yet.
The National Weather Service is forecasting a high temperature of 94 degrees for today.
"Another hot and somewhat humid day is in store," a weather service forecast discussion says.
And Saturday should be another warm day, with an expected high of 93 degrees.
Those scorching temperatures come after the high reached 90 degrees on Wednesday and 93 on Thursday. Thursday's high was the hottest temperature of 2013 to date.
These temperatures are far above normal for late May: Wednesday's high was 12 degrees above average and Thursday's was 15 degrees above normal.
By the beginning of next week, though, some relief should be on its way.
Sunday should be slightly cooler, with an expected high of 89 degrees and a chance of thunderstorms.
Though the temperature will likely be lower, Sunday is expected to be more humid than today or Saturday, forecasters say.
The weather service forecast says a "slow-moving cold front will approach on Sunday and push across the region around Monday night."
On Monday, the high temperature is expected to reach just 79 degrees. Tuesday's temperatures should also be closer to normal, with an expected high of 75 degrees.
Despite the unusually hot temperatures the region will feel today and Saturday, the heat likely won't break any records.
Philadelphia's record high temperature for both today and Saturday is 97 degrees, and the high on both days will probably fall short of that.
An air-quality alert for the region is also in effect today.
The Environmental Protection Agency says the "code orange" alert means ozone levels are "unhealthy for sensitive groups," such as the elderly, young children and people with respiratory problems like asthma, emphysema and bronchitis.
Those people should limit outdoor activities today.
"A period of calm winds overnight and light southwesterly winds during the morning will allow pollutants to accumulate," says Air Now, the EPA's air-quality website.
Heavy traffic to the Jersey Shore will also be a source of ozone pollutants, the agency says.