Extreme Heat Watch issued June 19 at 9:22PM CDT until June 24 at 12:00AM CDT by NWS Chicago IL

* WHAT…Dangerously hot and humid conditions with high temperatures
each day well into the 90s and peak afternoon heat index values of
100 to 105 degrees possible.

* WHERE…Central Cook, Northern Cook, and Southern Cook Counties.

* WHEN…From Saturday morning through Monday evening.

* IMPACTS…Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS…Heat indices will likely remain in the 90s
late into the evening hours with overnight lows possibly
struggling to fall much below 80 degrees.