A heat advisory was allowed to expire for most of North Texas at 7 p.m. Monday, but people are still urged to use extreme caution while outside in the heat as temperatures are expected to reach the upper 90s Tuesday.
The heat advisory was extended until 7 p.m. Tuesday for counties in southeastern North Texas, including Anderson, Freestone, Henderson and Navarro counties.
The high temperature Monday at Dallas/Fort Worth International Airport was 106 degrees, with a heat index as high as 110 degrees across much of North Texas.
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"A weak cold front will approach the area on Tuesday and shave off a couple degrees from the high with a more noticeable drop by Wednesday. There will also be a slight chance of rain accompanying the front," said NBC 5 Meteorologist Grant Johnston.
NBC 5 Chief Meteorologist David Finfrock said temperatures are measured in the shade -- if you're working outside in direct sunlight, you can add 10-15 degrees to the temperature.
So far this month, MedStar Ambulance said they've responded to more than 30 heat-related calls.
With such oppressive heat in the forecast, North Texans are reminded to check on their friends and loved ones with health problems as they may be among the most susceptible to heat exhaustion and heat stroke.
As always, never leave young children or pets unattended in an enclosed vehicle, even for a short amount of time, as temperatures can quickly rise to threatening levels.
Pets should not be left unattended outdoors for more than a few minutes.
Water is the cornerstone to staying safe this week, according to the Centers for Disease Control and Prevention. Officials said it's important to start drinking before becoming thirsty and if you know you're going to be out in the heat, begin drinking water the night before.
Officials recommend staying indoors, but anyone who must be outside should drink a cup of water about every 20 minutes and wear lightweight, loose-fitting clothing.
According to the Centers for Disease Control and Prevention, the symptoms of heat stroke include hot, dry skin or profuse sweating; hallucinations, chills, throbbing headache, high body temperature, confusion/dizziness and slurred speech.
Take the following steps to treat a worker with heat stroke: Call 911 and notify their supervisor. Move the sick worker to a cool shaded area. Cool the worker using methods such as: Soaking their clothes with water. Spraying, sponging, or showering them with water. Fanning their body.
According to the Centers for Disease Control and Prevention, the symptoms of heat exhaustion include heavy sweating, extreme weakness or fatigue, dizziness and confusion, nausea, clammy or moist skin, pale or flushed complexion, muscle cramps, slightly elevated body temperature and fast or shallow breathing.
Treat a worker suffering from heat exhaustion with the following: Have them rest in a cool, shaded or air-conditioned area. Have them drink plenty of water or other cool, nonalcoholic beverages. Have them take a cool shower, bath, or sponge bath.