The NWS has issued a Heat Advisory until Wednesday at 7 pm for St. Louis City.
Timing and Heat Index:
Temperatures will rise into the mid-90's each afternoon until early Wednesday evening.
Heat indices of 105 degrees are expected through Wednesday evening.
Dewpoints will be in the mid 70s.
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, animals, and those participating in strenuous outdoor activities will be the most susceptible. Car interiors can reach lethal temperatures in a matter of minutes.