ST. LOUIS — A heat advisory hits the St. Louis region on Sunday, with heat index readings expected to hit 100 for the first time this year. Dangerous heat is expected to continue into next week as a high pressure ridge builds up over the area.
Nearly 30 counties and communities in eastern Missouri are under a heat advisory Sunday, including St. Louis City, St. Louis County and most surrounding areas. The current consultation lasts on Sundays from 11 a.m. to 9 p.m.
Temperatures soar into the 90s as humidity increases throughout Sunday. The heat indices are expected to rise into the triple digits.
By Monday and Tuesday we could see heat index readings of 105 to 110 degrees when the actual air temperature reaches around 100. Record temperatures are likely to be broken on both days.
Heat index through Wednesday
On Wednesday temperatures will still be close to 100 degrees and heat indexes will likely still be dangerous. A few thunderstorms are possible on Wednesday late afternoon. Thursday and Friday will still be quite hot but the highs will fall into the lower half of the 90’s.
This heat is the worst of the season so far and will bring an increased risk of heat-related illnesses, so take the necessary safety precautions. Wear light clothing, drink plenty of water, and avoid strenuous activities. If you must work outdoors, take plenty of breaks, if possible, in air conditioning or in the shade.
Also, if possible, avoid working or exercising outdoors during the hottest part of the afternoon. It’s best to get out early in the morning or later in the evening when temperatures are dropping. The most important thing: listen to your body!
https://fox2now.com/news/weather/dangerous-heat-to-impact-the-region-early-in-the-week/ Sunday heat warning, dangerous heat likely for several days in STL region