ST. LOUIS - St. Louis continues to flirt with triple digit temperatures and it sure feels like the dog days of summer.
The combination of high temperatures and humidity will lead to dangerously high heat indices persisting through Tuesday evening.
The excessive heat warning has been expanded to include much of Illinois and as well as the entire metro St. Louis area. Heat indices greater than 105 and possibly higher than 110 degrees will persist the next few afternoons.
A heat advisory is in effect for much of the rest of the viewing area due to heat indices between 100 and 105.
The oppressive heat will lead to an increased risk for heat-related illness. To prevent heat illness, avoid being outside during the peak heat of the afternoon
RELATED: Cool Down St. Louis information
Wear light, loose-fitting clothing and make sure to drink plenty of water. The elderly, young children and those without air conditioning are especially at risk for heat-related illness.
Car interiors can reach lethally high temperatures in a matter of minutes.
Never leave a child or pet in a vehicle, not even for a minute. Children can't cool themselves as quickly as adults. Remember to check the backseat.
Check on neighbors as well and make sure they have access to air conditioning.
For information about local cooling centers, call the United Way of Greater St. Louis at 1-800-427-4626.
Cool Down St. Louis also provides support for elderly and other people in need, they can be reached at 314-241-7668.