Connecticut doctors are warning residents about the dangers that come with extreme heat as the state braces for a possible heat wave.

Dr. Kyle Custis, who works at the Fairfield Urgent Care Center, is warning people to be aware of the signs of heat exhaustion and heat stroke. He says it can happen in minutes.

"He exhaustion is kind of a precursor to heat stroke," says Custis. "People will start to feel fatigued, headaches, dizzy and sweaty."

MORE: 8 tips for working safely during hot weather

He says when a body's core temperature gets to a certain point, that's when it's heat stroke. Custis adds that people will present with symptoms such as rapid heart rate, rapid breathing, mental status changes and confusion.

Storm Watch Team Meteorologist Jonathan Cubit says there will be near-record high temperatures through the end of the week. Watch his full forecast below:

Anyone who thinks they may have heat exhaustion should get out of the sun, drink water and cool down with ice packs.

Doctors say heat stroke, if left untreated, can be life-threatening. If you think you are experiencing heat stroke, call 911 immediately.

Custis says people need to be proactive so that they don't overheat. He says avoid strenuous activity during the day when it's the hottest and make sure to wear loose, lightweight clothing.

For those who must work outside, Custis says drink lots of water, take frequent breaks and try to get into an AC area to cool down.

Need to find a cooling center? Click here to get all the information - and watch the video below: