The "heat dome" settling across the Midwest will bring temperatures up to as much as 105 in Indiana.
More than two-thirds of the state is already under a burn ban because of the drought conditions.
The record stretch of 90 degree heat was set at 19 days during the dust bowl in 1936. If temperatures reach 90 degrees, today will mark the 17th day in a row.
The utility is asking residents to voluntarily agree to turn off their sprinklers and hoses through Sunday.
If the heatwave continues through the weekend as forecasted, it would be the longest heatwave to hit Indiana in 40 years.
Humidity and heat will both increase again next week.
Temperatures felt like more than 100 degrees today across much of Bloomington after you factored in the humidity.