Residents could be without power for a fourth day while temperatures remain in the high 90s, according to ComEd officials.

ComEd is expecting to restore service to a majority of customers impacted by Sunday's storm and heat-related outages by Wednesday, according to a statement from the power company.

However, it is possible that some customers could be without power until the evening of July 5. ComEd reports that the western suburbs, including Glen Ellyn, were among the communities hardest hit by the severe thunderstorm and lightning. The numerous downed trees and snapped wires are causing the power supply company to rebuild much of its infrastructure in these areas.

Tuesday morning was the third day without power for about 2,000 Glen Ellyn residents. Originally, the storm left approximately 16,340 residents without power Sunday, and about 7,362 on Monday.

Although many suburbs have canceled Fourth of July fireworks--including Wheaton--due to storm damage, Glen Ellyn will go on with Wednesday's events as planned. 

During this heat ComEd provides a few tips for customers:

Public safety is paramount during storms and ComEd encourages the public to remember to take the following precautions:  

• If you encounter a downed power line, immediately call ComEd at 1-800-EDISON1 (1-800-334-7661) or access our website at ComEd.com and report the location. Spanish-speaking customers should call 1-800-95-LUCES (1-800-955-8237). Customers also can visit Twitter for restoration updates. 
• Never approach a downed power line. Always assume a power line is energized and extremely dangerous. 
• Check on elderly and other sensitive family members and neighbors to ensure their safety and make alternate arrangements, as it may be some time before their power is restored. 
• To report an outage, customers can call 1-800 EDISON1 (1-800-334-7661), or report it through the web site – ComEd.com. Customers also can follow @ComEd on Twitter or Facebook to stay up to date on the latest ComEd info.