Excessive Heat Watch issued July 18 at 11:13AM CDT until July 22 at 8:00PM CDT by NWS

...An extended period of heat and humidity this week... .A hot and humid airmass will move into the Midwest this week. The heat combined with the humidity is expected to push heat index readings well into the 90s and possibly up to around 106 during the day with little relief at night. The hottest temperatures will be found roughly near and south of Interstate

from Current Watches, Warnings and Advisories for the United States Issued by the National Weather Service http://ift.tt/2u6mdTz