Official alert
Extreme Heat Watch
Extreme Heat Watch issued August 30 at 12:27PM CDT until September 4 at 8:00PM CDT by NWS St Louis MO
Read the official alert ↗Needs attention
Current concerns
Outside today
An easy start, then real heat.
90° now; temperatures climb toward 96°.
Right now90°Clear
- Rain
- 1%peak today
- Wind
- 11 mphright now
- Air
- 58US AQI · Moderate
How today changes
The next 24 hours
A quiet start gives way to real heat later today.
- 92°0% rainGusts 14 mph
- 93°0% rainGusts 14 mph
- 95°0% rainGusts 13 mph
- 96°0% rainGusts 12 mph
- 95°0% rainGusts 13 mph
- 94°0% rainGusts 13 mph
- 91°0% rainGusts 13 mph
- 87°0% rainGusts 13 mph
- 85°0% rainGusts 13 mph
- 83°0% rainGusts 14 mph
- 82°0% rainGusts 14 mph
- 81°0% rainGusts 13 mph
- 80°0% rainGusts 13 mph
- 79°0% rainGusts 12 mph
- 78°0% rainGusts 12 mph
- 77°0% rainGusts 12 mph
- 76°0% rainGusts 12 mph
- 76°0% rainGusts 12 mph
- 75°0% rainGusts 12 mph
- 77°0% rainGusts 13 mph
- 80°1% rainGusts 13 mph
- 85°0% rainGusts 14 mph
- 89°0% rainGusts 14 mph
- 92°0% rainGusts 14 mph
See the full 24 hours
- 92°0% rainGusts 14 mph
- 93°0% rainGusts 14 mph
- 95°0% rainGusts 13 mph
- 96°0% rainGusts 12 mph
- 95°0% rainGusts 13 mph
- 94°0% rainGusts 13 mph
- 91°0% rainGusts 13 mph
- 87°0% rainGusts 13 mph
- 85°0% rainGusts 13 mph
- 83°0% rainGusts 14 mph
- 82°0% rainGusts 14 mph
- 81°0% rainGusts 13 mph
- 80°0% rainGusts 13 mph
- 79°0% rainGusts 12 mph
- 78°0% rainGusts 12 mph
- 77°0% rainGusts 12 mph
- 76°0% rainGusts 12 mph
- 76°0% rainGusts 12 mph
- 75°0% rainGusts 12 mph
- 77°0% rainGusts 13 mph
- 80°1% rainGusts 13 mph
- 85°0% rainGusts 14 mph
- 89°0% rainGusts 14 mph
- 92°0% rainGusts 14 mph
A little farther out
The next five days
Today brings notable heat.
- Rain
- 0%
- Wind
- 14 mph
Monday brings notable heat.
- Rain
- 1%
- Wind
- 14 mph
Tuesday brings notable heat.
- Rain
- 0%
- Wind
- 12 mph
Wednesday brings notable heat.
- Rain
- 1%
- Wind
- 13 mph
Thursday brings notable heat.
- Rain
- 6%
- Wind
- 10 mph
- 96° / 82°Today brings notable heat.0% rain · Wind 14 mph
- 99° / 75°Monday brings notable heat.1% rain · Wind 14 mph
- 100° / 79°Tuesday brings notable heat.0% rain · Wind 12 mph
- 99° / 81°Wednesday brings notable heat.1% rain · Wind 13 mph
- 100° / 81°Thursday brings notable heat.6% rain · Wind 10 mph
Environmental watch
Air quality + smoke
Air quality
Saint Louis area · Updated Sun 12:00 PMNo fresh outlook yet.
See air-quality report
Sky check
Light smoke overhead
Satellite view · Updated Sun 12:36 PMAir near ground58 · Moderate US AQI
See smoke mapHow we know
Air quality describes Saint Louis area, about 21 miles from this place.
Smoke comes from a satellite view overhead. It shows smoke in the sky, not how much has reached breathing level.
Sources AirNow · participating air agencies · preliminary real-time US AQI · NOAA Hazard Mapping System · satellite-observed smoke · AirNow · participating air agencies · US AQI · National Weather Service · hourly weather and alerts · NIFC WFIGS · current interagency fire perimeters
Rain, in motion
St. Louis radar
Four recent hours, ending at Sun, 1:20 PM CDT.
An active official alert is in effect. Its affected area is described above the briefing.
Radar loads when you reach it.
LightHeavy
The map shows NOAA/NWS base reflectivity around St. Louis for the selected time. Brighter colors indicate stronger radar returns; the timeline above provides the rain outlook without requiring the map.
Plan around it
Find your best time in St. Louis.
Pick an activity and we’ll check the conditions.
Sources and limits
Weather observations, forecasts, alerts, and radar come from official NOAA and National Weather Service sources. Environmental sections keep their own source labels and update times. The default view represents St. Louis, MO-IL, not every street.