| Source | WLS AM |
|---|---|
| Original Load Date | June 29, 2026, 9:02 a.m. |
| Last Updated | June 29, 2026, 9:02 a.m. |
| Original URL | https://www.wlsam.com/2026/06/29/extreme-heat-warning-to-go-into-effect-monday-for-chicago-area/ |
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Dangerous heat is moving into the Chicago area starting Monday, with heat index
values over 100 forecast.
The National Weather Service has issued an **Extreme Heat Warning** for Cook
County from noon Monday until 10 p.m. Wednesday.
The NWS also issued a **Heat Advisory** for Boone, McHenry, Lake (...