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Chicago on Heat Alert: Air Quality Concerns Mount as Temperatures Soar, Storms Loom on the Horizon

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Published on August 07, 2025
Chicago on Heat Alert: Air Quality Concerns Mount as Temperatures Soar, Storms Loom on the HorizonSource: X/NWS Chicago

As the City of Chicago braces for another sweltering day, an air quality alert remains in effect due to rising temperatures approaching the 90-degree mark. Residents are told to expect "a 20 percent chance of showers and thunderstorms after 1pm," under mostly sunny skies according to the National Weather Service. The evening shouldn't bring much respite, with a 40 percent chance of storms after nightfall, and low temperatures hovering in the low to mid-70s.

The convergence of high temperatures and poor air quality has medical experts concerned, especially for those with respiratory sensitivities. With humidity on the rise, both the National Weather Service and FOX 32 Chicago note that Friday and Saturday will bring in more heat, with highs in the low 90s that feel even more sweltering thanks to the added moisture in the air.

Chicagoans looking ahead to the weekend should plan for sunny weather on Saturday and a persistent heat that is expected to carry on well into the coming week. The forecast suggests that the chance of showers and thunderstorms returns early Friday and spot another chance Sunday night into Monday, breaking up an otherwise clear weekend. However, high humidity levels mean the city will be mired in discomfort, with "heat index values as high as 98" degrees reported by the National Weather Service.

As Chicagoans navigate this stretch of late-summer weather, officials urge extra precautions for the elderly, children, and those with pre-existing health conditions. The air quality alert issued through midnight is a stark reminder for residents to limit outdoor activities and to stay hydrated during peak heat hours. Looking into the next week, temperatures are expected to stay steadfastly above normal – "not far from 90 for highs each day," as per an alert from FOX 32 Chicago, signaling a prolonged bout of summer's dogged persistence.