Heat advisory issued in St. Louis metro for soaring temperatures Wednesday

Soaring temperatures expected Wednesday prompted the National Weather Service to issue a heat advisory.

The advisory is in effect from 11 a.m. to 8 p.m. Wednesday.

The heat index will reach 105 degrees based on temperatures hitting the mid-90s.

The heat and humidity during a heat advisory may cause heat stress during outdoor exertion or extended exposure. 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.

The advisory affects St. Louis County, St. Louis city, Jefferson County, Monroe County, St. Clair County, Madison County and St. Charles County.

The St. Louis County Office of Emergency Management recommends the following precautions during an excessive heat advisory:

Heat-related illnesses are possible, especially for those living in un-air conditioned homes or 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.

Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to the early morning or evening.

Know the signs and symptoms of heat exhaustion and heatstroke. Wear lightweight and loose fitting clothing when possible and drink plenty of water.

To reduce risk during outdoor work, the U.S. 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. Heatstroke is an emergency, call 911 immediately.

And remember: Where’s baby? Look before you lock.

Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes.