NWS / NOAA weather: Extreme Heat Warning issued July 3 at 4:10AM CDT until July 3 at 10:00PM CDT by NWS St Louis MO

* WHAT...Heat index values up to 105.

* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, northeast, and southeast
Missouri.

* WHEN...For the Extreme Heat Warning, until 10 PM CDT this evening.
For the Heat Advisory, from 10 PM this evening to 8 PM CDT
Saturday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity may cause heat illnesses.

Source: NWS / NOAA weather.