Chicago and northern Illinois are set to experience a hot and humid day on Sunday, with temperatures soaring to 94°F and heat index values approaching 100°F.
Thunderstorms are expected to develop in the afternoon, bringing gusty winds and potential downpours, especially northeast of I-90. By Tuesday, cooler and less humid air will bring relief, with temperatures dropping into the upper 70s.
Areas Affected by the Heat and Thunderstorms
The National Weather Service in Chicago has issued a weather alert for Sunday, with heat and storms impacting much of northern Illinois.
Thunderstorms are expected to develop after 4 p.m., particularly in Lake, McHenry, and Cook counties. These storms may continue into the evening, with the possibility of gusty winds and brief power outages. Additional thunderstorms are expected along the I-80 corridor through Monday.
Chicago itself will likely see highs around 94°F, with nighttime temperatures remaining in the mid-70s. Areas like Joliet, Kankakee, and Waukegan should be ready for sudden downpours that could reduce visibility on the roads, especially along I-57 and I-80, where travel may be disrupted by heavy rain on Monday morning.
What to Expect and Safety Tips
Heat: Temperatures are expected to peak at 94°F in Chicago on Sunday, with a heat index close to 100°F. It’s important to stay hydrated, wear light clothing, and avoid strenuous outdoor activities, particularly between noon and 6 p.m.
Thunderstorms: Isolated thunderstorms will develop in the afternoon, especially in areas north and west of Chicago. Be prepared for sudden downpours, gusty winds, and possible lightning.
Travel: Heavy rain and reduced visibility may impact travel, especially on interstates I-57 and I-80. Drivers should be cautious and prepared for changing weather conditions, especially on Monday morning.
Cooling: If you don’t have air conditioning at home, try to visit cooling centers or stay in air-conditioned public spaces to stay safe from the heat. Avoid using fans alone as they aren’t effective during extreme heat.
Forecast for Next Week
By Tuesday, a cooler and less humid air mass will move into Chicago, bringing relief from the heat. Highs will be in the upper 70s, and a dry pattern is expected to continue through midweek. This will be a welcome break from the oppressive heat and humidity, allowing residents to enjoy more comfortable temperatures.
