Thursday was the fifth day of the state's current heat wave and also was recorded as the hottest day of 2013 so far.
The mercury reached 96 degrees at Bradley International Airport in Windsor Locks Thursday, and Channel 3 Early Warning Weather Meteorologist Scot Haney said Friday will be just as hot.
Haney said temps will rise well into the 90s Friday, and some locations in Connecticut could reach 100 degrees.
The heat index will exceed 100 degrees, Haney said, and it's not out of the question to see that rise higher than 105 degrees.
The record high temp for Friday and Saturday is 100 degrees at BDL, and Haney said it could be a close call - especially Friday.
Saturday with be the seventh and final day of the heat wave, Haney said, and temps will once again reach into the 90s.
A cold front is expected to bring relief by Sunday, and temps will likely remain only in the 80s.
Because of the high temperatures expected again Friday, an excessive heat warning was issued for Fairfield, New Haven, Hartford, Southern Litchfield and Northern Middlesex counties.
The rest of the state is under an excessive head advisory.
Air quality alerts have also been posted for most of the state.
Officials warn of unhealthy air quality
The state's Department of Energy and Environmental Protection said there will be unhealthy air quality conditions for sensitive groups in the coming days when elevated concentrations of ozone pollution is expected.
The unhealthy air could impact the elderly, as well as adults and children with respiratory conditions.
Officials are asking anyone that may be sensitive to ozone should avoid any strenuous activity and/or remain inside until air quality conditions improve, which could come by Sunday.
Utility companies ask residents to conserve power
Utility companies are making a voluntary request for people to not overload on the use of appliances such as air conditioners during peak hours.
The power demand is high as a result of the scorching temperatures. Utility companies have asked people to start to conserve power during the weeklong heat wave.
It is not an official warning, just a request to limit usage during the peak hours of 2 p.m. to 6 p.m.
Officials said customers can reduce electric usages without affecting their quality of living by limiting the use of washers and dryers as well as stoves and air conditioners. People should also turn off unnecessary lighting.
Officials from Norwich Public Utilities and ISO New England released a statement.
"As the heat continues to build throughout the week, electricity demand is expected to increase significantly, which is likely to result in tight system conditions," said Vamsi Chadalavada, executive vice president and chief operating officer of ISO New England Inc. "The ISO is asking consumers to voluntarily conserve as a precautionary step to help manage system conditions."
Officials with Norwich Public Utilities echoed what ISO New England said.
"Electricity is a commodity that is bought and sold on the open market, and costs are determined by the amount of electricity that is bought. When a tremendous amount of electricity is being used, the price increases exponentially. We are then charged this higher price for the following year," said John Bilda, Norwich Public Utilities general manager. "Since the demand for power on these power alert days is so great, by decreasing our electrical use, we lower our electricity demand. This will then have a positive effect on next year's wholesale energy cost."
Connecticut residents dealing with the heat
Doctors told Eyewitness News heat exhaustion and heat stroke are a common occurrence during days with high heat and humidity. Two of the big warning signs are becoming disoriented and when a person stops sweating even though it's hot out.
People working outside this week are being advised to use common sense, wear light loose-fitting clothing and drink plenty of fluids.
Workers were advised to go into their vehicles and use the air conditioning as well to avoid the heat.
Doctors said it's better not to work outside during the heat, but some people do not have that option.
Copyright 2013 WFSB (Meredith Corporation). All rights reserved.