Heat index readings around 105 degrees are expected on Thursday.
Heat advisories, warnings and watches are in effect for 23 states east of the Rockies. Heat indeces look to push close to 100 by the afternoon. The Department of Environmental Protection has issued an air quality alert for Monday due to increases in ozone levels. Overnight lows Monday night will not fall below the upper 70s.
"The combination of hot temperatures and high humidity will combine to create a risky situation in which heat illnesses are likely", the National Weather Service said.
Tuesday is slated to bring a high of 92 and sunny skies.
Health officials also advise residents to check on those more at risk from high temperatures - infants and young children, people aged 65 or older, people with chronic medical conditions.
The ridge of high pressure will eventually be squashed southward enabling a return to refreshing air late Friday or Friday night.
Some inland areas of ME, such as Fryeburg, could find themselves in a heat wave, which is defined as three consecutive days of 90-degree temperatures. Storms will keep popping up during the afternoon and evening hours.
"Heat exhaustion is on the milder side; that's when you first feel that you're dehydrated, you're sweating a lot, you're nauseous", said Dr. Eric Shobitz, a pediatric emergency doctor at Adventist HealthCare Shady Grove Medical Center. In addition, be sure to check on vulnerable friends, family members and neighbors. It is against the law to leave a pet in a auto when the temp is above 78 degrees, according to the Cook County animal control department.
NWS encourages individuals limit or reschedule strenuous outdoor activities. find shade and stay hydrated. Although it ended up a little cooler than yesterday in many spots, it was actually a touch warmer in the city.
The heat wave is expected to persist for six to eight days in many communities, according to AccuWeather, with peak intensity hitting Monday.
Call 1-800 75CONED if your power goes out.