July Heat Wave Claims Six Lives in Cook County
July Heat Wave Claims Six Lives in Cook County
US · Published Jul 22, 2026
A severe heat wave in Cook County, Illinois, has resulted in six confirmed deaths, marking the deadliest month for heat-related fatalities in over a decade, according to the Cook County medical examiner’s office.
The deaths occurred between June 30 and July 14, 2026, with air temperatures reaching the upper 90s °F (32-37 °C) and heat indices exceeding 100 °F (37.8 °C).

Impact & Risks

The heat wave has disproportionately affected individuals with pre-existing health conditions, such as cardiovascular disease, diabetes, and obesity. Vulnerable groups, including the elderly, those with mental health conditions, and individuals without access to air conditioning, are at heightened risk. The fatalities highlight the ongoing danger of extreme heat, which, according to the National Oceanic and Atmospheric Administration, kills more people annually in the U.S. than any other weather-related disaster. Experts emphasize the need for improved access to cooling centers and other heat mitigation measures to prevent further loss of life.

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