(KTVI) – The National Weather Service has issued a Heat Advisory for the St. Louis area until Saturday, August 31st. The advisory is in effect for St. Louis City, St. Louis County, St. Charles County, and Madison and St. Clair Counties in Illinois.
Temperatures are expected to be in the upper 90s Tuesday with high humidity. Heat indices could reach 100 degrees.
A Heat Advisory is issued when the heat index is expected to range from 100° to 104° for at least 4 consecutive days.
No rain or storms are in the forecast this week.