Oppressive heat expected to grip St. Louis metro most of this week

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Conditions in the St. Louis area may feel as hot as 113 degrees this week, according to the National Weather Service.

An excessive heat watch will be in effect in the area from 5 p.m. Tuesday until 1 a.m. Sunday, the weather service reports.

The heat wave is expected to feel more intense and last longer than last week’s heat advisory in the area, said weather service meteorologist Charley Kelly.

The worst conditions are expected Wednesday through Saturday with highs from 97 to 103 degrees.

The heat index value, or what conditions feel like on skin, may reach between 105 and 113 degrees in the afternoons and early evenings.

The St. Louis metro area is expected to get the most intense heat in the region, Kelly said.

“It’s concerning not just because the heat indices will be higher than last week, but the duration is also a concern,” Kelly said. “It could remain through the weekend.”

The weather service warns that heat is one of the leading causes of weather-related fatalities each year.

The very young and elderly as well as those who spend days outdoors are particularly at risk, Kelly said.

“It’s not good news for people who work outside and it’s definitely not good for your air conditioning units,” Kelly said.

The weather service also warns that children and animals should never be left in vehicles during these conditions as temperatures in cars can become lethal within minutes.