Chicago weather: Heat index over 100 forecast for Chicago area Tuesday

No relief from the heat as September kicks off. Is this normal?

<p>September 1 was the start of meteorological Fall — but also the start of yet another heat wave in the Chicago area. A heat advisory was issued by Chicago's Office of Emergency Management and Communications for "dangerous heat" on Tuesday. </p><p><a class="Link" href="https://chicago.suntimes.com/weather/2026/08/31/temperature-heat-forecast" target="_blank" ><u>Peak heat indices</u></a> — or how the temperature feels — were expected to reach 1…

Chicago weather: Heat index over 100 forecast for Chicago area Tuesday

Hot and muggy weather is in the forecast for the Chicago area Tuesday, with heat index values over 100.

Chicago weather: Dangerous heat returns to start September

September may be here, but dangerous summer heat is taking over Chicagoland. See how long it lasts.

Heat index will top 100 several times this week

An early September heat wave is expected to continue through the end of the week in the Tri-State area, with heat advisories issued for parts of Ohio.

Chicago forecast: Hot, humid stormy pattern all week; severe weather possible

The Chicago-area is in a hot, humid and stormy pattern this week, with temperatures feeling like 100 degrees or even hotter by mid-week and multiple waves of showers and storms. Early Monday morning, Live Doppler 5 Radar showed showers and storms with heavy downpours and lightning pushing through the northern suburbs, including in parts of Lake, McHenry and Kenosha Counties. “Non-severe, but heavy rain and plenty of lightning and thunder,” NBC 5…