St. Louis is waking up to another scorcher today, Monday, August 10, with mostly sunny skies, a high near 97°F, and a heat index climbing as high as 107°F, according to the National Weather Service. This is dangerous heat — push outdoor plans to early morning or evening, drink extra water, and check on elderly neighbors, kids, and pets who can’t easily escape it.
Today’s Setup
The latest Area Forecast Discussion from the NWS notes a shortwave over the Mississippi River Valley is firing off showers and thunderstorms in western and central Missouri this morning, with activity possible along and north of the I-70 corridor before weakening into scattered showers. These storms aren’t expected to be severe thanks to a weakening low-level jet, and St. Louis sits mostly south of the action. A stubborn upper-level ridge keeps southerly flow — and the heat and humidity — locked in place, with winds light out of the southwest around 8 mph. Tonight only cools to a muggy 79°F, with the heat index still near 106°F.
Best Window To Be Outside
If you’re planning a walk near the Gateway Arch grounds, a paddle on the Mississippi River, or a round of golf, aim for before 9 AM CT or after 7 PM CT when temperatures ease off their peak. Anglers heading out early should grab polarized fishing sunglasses to cut the glare, and it’s a smart week to grab the UPF 50+ Sun Hoodie deal — it’s $5 right now and built for exactly this kind of sun.
Heat Risk & Safety
The NWS has Extreme Heat Warnings and Heat Advisories in effect and says the dangerous heat and humidity continue through Wednesday. Limit strenuous outdoor activity during peak afternoon hours, wear light-colored clothing, and never leave kids or pets in a parked car.
Cardinals, Concerts & Gameday Weather
The Cardinals host the Phillies at Busch Stadium on Tuesday, August 11 — St. Louis’s hottest day of the stretch, with sunshine, a high near 99°F, and a heat index up to 111°F. Tailgaters should hydrate constantly and seek shade between innings; Get tickets on SeatGeek or Find tickets on StubHub, and grab Official team gear on Fanatics before first pitch. Also Tuesday, Train brings the Drops of Jupiter tour to Hollywood Casino Amphitheater — a Train t-shirt makes a good souvenir. NEEDTOBREATHE plays Saint Louis Music Park Wednesday, and Guns N’ Roses hits Busch Stadium August 16 — a Guns N’ Roses t-shirt or Guns N’ Roses hoodie is worth grabbing ahead of the show.
Tonight’s Dinner
With heat like this, the grill beats the oven every time — fire up burgers, steaks, or grilled chicken with corn on the cob for dinner. An instant-read meat thermometer keeps everything safely cooked without drying it out, and a grill brush and scraper set makes cleanup quick. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
The NWS says an approaching cold front finally brings rain chances and a cooldown Wednesday into the weekend, though there are early signs above-average temperatures could linger even after the front passes. For more ways to beat the heat, check out our outdoor gear deals.
