Chicago is waking up to a thick, soupy start at Midway on Sunday, July 26, 2026, with cloudy skies, temperatures in the mid-70s and dew points high enough to make everything feel sticky. Sunshine should break through by late morning and help push highs into the upper 80s, around 89°F this afternoon, with heat-index values climbing into the upper 90s. A chance of showers and thunderstorms late Sunday night and again Monday means outdoor plans should stay flexible.
Heat Advisory Midday Through Evening
According to the National Weather Service, a Heat Advisory is in effect from noon to 8 p.m. CDT on Sunday, July 26, 2026, for parts of the inland metro. Forecasters expect highs near 89°F, with heat-index readings possibly reaching 97°F at peak heating. It is a good day to push strenuous activity into the morning or evening hours, drink plenty of water, and check on older neighbors or anyone without air conditioning. Employers and outdoor-event organizers should plan for extra breaks and shade for crews during the hottest part of the afternoon.
Storms Tonight And Monday
Showers and a few thunderstorms are possible after about 10 p.m. Sunday and into early Monday, with better odds of more organized storms Monday afternoon and evening, though coverage and timing are still on the uncertain side. If storms do come together, they could bring brief heavy downpours, frequent lightning and gusty winds that may top 25 to 30 mph in stronger cells. If you have plans Monday evening, keep an eye on the latest forecast and be ready to move indoors quickly at the first rumble of thunder.
Cooler But Windy Tuesday And Rough Lake Conditions
Behind a cold front on Tuesday, July 28, 2026, highs drop back into the upper 70s, with a north wind of 15 to 20 mph and gusts up to 30 mph that will leave beaches and marinas choppy. The same forecast calls for large waves and strong currents Tuesday and Tuesday night, creating a high swim and rip-current risk for Lake Michigan visitors. If you are heading to the lake, obey beach flags, avoid going into the water alone, and check local lifeguard postings before you commit to a swim.
Where To Find Relief
If you need an air-conditioned place to cool off, the City of Chicago maintains a network of cooling centers and public facilities. You can call 311 or check the city's cooling-center map to find the nearest option. Libraries, park fieldhouses and select senior centers often serve as cooling hubs during heat advisories. For last-minute updates on any watches or warnings, keep up with local forecasts and official channels before you head out for outdoor plans.
