The United States’ scorching summer of 2026 was a record-breaker, scientists from the National Oceanic and Atmospheric Administration announced Sept. 9.
Saint Louis, MO
Right Now
81°
- Humidity: 72%
- Feels Like: 87°
- Heat Index: 87°
- Wind: 2 mph
- Wind Chill: 81°
- UV Index: 0 Low
- Sunrise: 06:42:44 AM
- Sunset: 07:08:44 PM
- Dew Point: 72°
- Visibility: 10 mi
Today
A few clouds. Low near 75F. Winds light and variable.
Tonight
A few clouds. Low near 75F. Winds light and variable.
Tomorrow
Intervals of clouds and sunshine. Hot. High 94F. Winds light and variable.
Weather Alert
...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values up to 106. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 8 PM CDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. &&
Next 12 Hours
Time
Temp
Wind
Precip
1 AM
81°
1 mph
9%
1 AM
81°
Wind: SSE @ 1 mph
Precip: 9% Chance
Humidity: 73%
Wind Chill: 81°
Heat Index: 86°
UV Index: 0 Low
Visibility: 10 mi
Dew Point: 72°
2 AM
80°
2 mph
10%
2 AM
80°
Wind: S @ 2 mph
Precip: 10% Chance
Humidity: 76%
Wind Chill: 80°
Heat Index: 85°
UV Index: 0 Low
Visibility: 10 mi
Dew Point: 72°
3 AM
79°
1 mph
7%
3 AM
79°
Wind: S @ 1 mph
Precip: 7% Chance
Humidity: 77%
Wind Chill: 79°
Heat Index: 84°
UV Index: 0 Low
Visibility: 10 mi
Dew Point: 71°
4 AM
77°
3 mph
5%
4 AM
77°
Wind: SW @ 3 mph
Precip: 5% Chance
Humidity: 83%
Wind Chill: 77°
Heat Index: 77°
UV Index: 0 Low
Visibility: 10 mi
Dew Point: 72°
5 AM
76°
4 mph
5%
5 AM
76°
Wind: S @ 4 mph
Precip: 5% Chance
Humidity: 84%
Wind Chill: 76°
Heat Index: 76°
UV Index: 0 Low
Visibility: 10 mi
Dew Point: 71°
6 AM
76°
3 mph
5%
6 AM
76°
Wind: E @ 3 mph
Precip: 5% Chance
Humidity: 86%
Wind Chill: 76°
Heat Index: 76°
UV Index: 0 Low
Visibility: 10 mi
Dew Point: 71°
7 AM
76°
3 mph
9%
7 AM
76°
Wind: ESE @ 3 mph
Precip: 9% Chance
Humidity: 87%
Wind Chill: 76°
Heat Index: 76°
UV Index: 0 Low
Visibility: 10 mi
Dew Point: 71°
8 AM
78°
3 mph
15%
8 AM
78°
Wind: SE @ 3 mph
Precip: 15% Chance
Humidity: 84%
Wind Chill: 78°
Heat Index: 83°
UV Index: 0 Low
Visibility: 10 mi
Dew Point: 73°
9 AM
81°
4 mph
6%
9 AM
81°
Wind: SSE @ 4 mph
Precip: 6% Chance
Humidity: 77%
Wind Chill: 81°
Heat Index: 86°
UV Index: 1 Low
Visibility: 10 mi
Dew Point: 73°
10 AM
84°
4 mph
4%
10 AM
84°
Wind: SSW @ 4 mph
Precip: 4% Chance
Humidity: 70%
Wind Chill: 84°
Heat Index: 91°
UV Index: 3 Moderate
Visibility: 10 mi
Dew Point: 73°
11 AM
86°
4 mph
2%
11 AM
86°
Wind: SW @ 4 mph
Precip: 2% Chance
Humidity: 65%
Wind Chill: 86°
Heat Index: 94°
UV Index: 5 Moderate
Visibility: 10 mi
Dew Point: 73°
12 PM
89°
4 mph
1%
12 PM
89°
Wind: SW @ 4 mph
Precip: 1% Chance
Humidity: 60%
Wind Chill: 89°
Heat Index: 98°
UV Index: 7 High
Visibility: 10 mi
Dew Point: 73°
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- Ethan Erickson | Post-Dispatch
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