Extreme Heat Warning through tonight / Heat Advisory through Thursday 
The National Weather Service will end the Extreme Heat Warning for the City of St. Louis at 9:00 p.m. tonight, June 23. NWS has issued a Heat Advisory for beginning at 9:00 p.m. tonight through 9:00 p.m. Thursday, June 26. Dangerously hot conditions with heat index values up to 104 will be expected.
Heat-related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a landline phone, dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside.
When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible.
To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air-conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9-1-1.
Address/Location
City of St. Louis Emergency Management
1915 Olive St
St. Louis, MO 63103
Contact
Emergency: 9-1-1