Extreme heat warning, advisory issued across Chicago area with heat index over 100

Source NBC Local
Original Load Date June 28, 2026, 7:01 p.m.
Last Updated June 28, 2026, 7:01 p.m.
Original URL https://www.nbcchicago.com/news/local/extreme-heat-warning-advisory-issued-across-chicago-area-with-heat-index-over-100/3954646/

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The first heat wave of the season is expected to arrive on Monday, with officials warning of a stretch of dangerous conditions that could drive heat index values to around 105 degrees over the coming days. An extreme heat warning was issued for Cook County beginning at noon on Monday and lasting th...