The National Weather Service has issued at Heat Advisory in effect from Noon today to 7pm on Friday for Fayette County and all the way to St. Louis, including the St. Louis metro area.
Heat index values will rise above 100 degrees each afternoon through Friday due to temperatures in the mid to upper 90s and dew points in the mid 70s.
Heat index values up to 110 are possible by the end of the week.
The combination of hot temperatures and high humidity will likely lead to an increased risk of heat-related stress and illness. The very young, the elderly, those without air conditioning and those participating in strenuous outdoor activities will be the most susceptible. Also, car interiors can reach lethal temperatures in a matter of minutes.
A heat advisory means that a period of hot temperatures and high humidity will occur. This combination will create a situation in which heat related illnesses are possible, especially for those living in un-air conditioned homes and apartments. People in the advisory area are advised to avoid poorly ventilated areas and prolonged work in the sun. Also, keep plenty of liquids on hand and try to stay in an air conditioned environment.