A stretch of hot and humid weather is about to peak today and into tomorrow.

The National Weather Service has issued a heat advisory that runs through 7 p.m. Friday. Highs are predicted to reach 93 today, with heat indices of 95 to 105 from late morning until early evening.

After three days of hot, muggy conditions, the weather service is warning that the duration of hot, humid weather is increasing the threat for heat-related illnesses.

“We are reaching the critical portion of the heat wave where bodies have been stressed for a number of days,” the National Weather Service advisory states.

With temperatures only falling to the 70s overnight, people haven’t been able to cool down at night.

The weather service is urging people to check on elderly family members or those with medical conditions that may be more susceptible to heat.

People should take extra precautions if working outside, reschedule strenuous activities to early morning or evening, wear loose-fitting clothes and drink plenty of water.

Friday’s high will be around 87. A cold front is expected to move through the area Friday, but not until the evening hours. There is a slight chance of storms Friday as the cold front moves through the area.