National Weather Service United States Department of Commerce

St. Louis, MO

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Heat Safety
Hot Week
Extreme heat and humidity is expected this week. If you're planning to spend time outdoors, make sure you are prepared for the heat. Take frequent breaks, drink plenty of water, and have a place to cool down.
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It's a hot week ahead. Daytime highs in the upper 90s will combine with humid conditions to produce heat index values of 100-110 degrees. Rain chances start to tick up again by Friday.
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