Hot and muggy today with scattered afternoon storms; heat index may top 100°F. Cooling centers are available downtown.

Heat Advisory runs from noon Saturday through Tuesday with highs near 94°F and heat‑index values into the 100s. City cooling centers are available.

Hot and humid Friday with highs near 92°F and a chance of afternoon storms. Cooling centers are listed across the city.

Showers and thunderstorms are likely this afternoon in St. Louis with highs near 91°F. Heat returns this weekend with possible heat‑index readings near 100–105°F.

Foggy mornings give way to hot, humid afternoons and scattered storms. Heat index could top 100°F through the weekend.

Patchy morning fog clears to sunny skies with highs near 91°F. Heat index may top 100°F later in the week; brief afternoon storms possible.

Sunny Monday with a high near 88°F. Heat builds midweek into the 90s with heat‑index values near 100–105 by late week.

Clear Sunday with a high near 87°F and a muggy low around 69°F. Heat returns into the 90s by midweek; city cooling sites available.

Flash-flood watch through 7 p.m. Saturday for St. Louis as scattered storms may produce heavy downpours and localized flooding.

Flash Flood Watch runs through Saturday morning as storms likely bring heavy rain and gusty winds tonight. Expect localized flooding and travel delays.

Heavy rain and storms produced flash flooding south of St. Louis on July 10, with 4–8 inches reported in some spots. Officials warn to avoid flooded roads and monitor local alerts.

St. Louis County says mosquito samples trapped in Richmond Heights tested positive for West Nile. Officials urge repellent, long clothing and removing standing water.

Severe storms and dangerous heat could hit St. Louis Thursday into the evening. Expect gusty winds, heavy downpours and heat-index readings above 100°F.