Outdoor conditions in

Lake St. Louis

Missouri
Air qualityAir quality is moderate at the official reporting area.Air near ground level
Now
  1. 74°Showers And Thunderstorms Likely70% rain87% humidityGusts 13 mph
  2. 76°Chance Showers And Thunderstorms54% rain85% humidityGusts 14 mph
  3. 76°Chance Showers And Thunderstorms41% rain87% humidityGusts 16 mph
  4. 78°Chance Showers And Thunderstorms37% rain82% humidityGusts 16 mph
  5. 79°Chance Showers And Thunderstorms34% rain79% humidityGusts 18 mph
  6. 78°Chance Showers And Thunderstorms35% rain85% humidityGusts 18 mph
  7. 78°Chance Showers And Thunderstorms45% rain82% humidityGusts 20 mph
  8. 77°Chance Showers And Thunderstorms46% rain82% humidityGusts 20 mph
  9. 73°Scattered Showers And Thunderstorms46% rain90% humidityGusts 18 mph
  10. 70°Chance Showers And Thunderstorms58% rain93% humidityGusts 20 mph
  11. 68°Chance Showers And Thunderstorms69% rain97% humidityGusts 23 mph
  12. 66°Scattered Rain Showers48% rain97% humidityGusts 24 mph
  13. 62°Scattered Rain Showers50% rain100% humidityGusts 24 mph
  14. 59°Scattered Rain Showers47% rain100% humidityGusts 23 mph
  15. 56°Isolated Rain Showers15% rain100% humidityGusts 23 mph
  16. 54°Cloudy2% rain96% humidityGusts 23 mph
  17. 53°Mostly Cloudy1% rain96% humidityGusts 22 mph
  18. 51°Mostly Cloudy0% rain96% humidityGusts 22 mph
  19. 49°Mostly Cloudy0% rain96% humidityGusts 24 mph
  20. 48°Mostly Cloudy0% rain89% humidityGusts 25 mph
  21. 47°Partly Sunny0% rain86% humidityGusts 26 mph
  22. 46°Mostly Sunny0% rain89% humidityGusts 26 mph
  23. 50°Mostly Sunny0% rain83% humidityGusts 28 mph
  24. 52°Partly Sunny0% rain77% humidityGusts 29 mph
Extra care for

A little farther out

The next five days

Today

Today carries a thunderstorm chance.

Rain
90%
Humidity
79–100%
Wind
24 mph
Fri

Friday has a real shower chance.

Rain
47%
Humidity
71–100%
Wind
29 mph
Sat

Saturday looks fairly quiet.

Rain
4%
Humidity
44–96%
Wind
16 mph
Sun

Sunday looks fairly quiet.

Rain
0%
Humidity
40–89%
Wind
9 mph
Mon

Monday looks fairly quiet.

Rain
1%
Humidity
44–96%
Wind
6 mph
  1. 79° / 62°Today carries a thunderstorm chance.90% rain · Humidity 79–100% · Wind 24 mph
  2. 59° / 46°Friday has a real shower chance.47% rain · Humidity 71–100% · Wind 29 mph
  3. 60° / 38°Saturday looks fairly quiet.4% rain · Humidity 44–96% · Wind 16 mph
  4. 67° / 38°Sunday looks fairly quiet.0% rain · Humidity 40–89% · Wind 9 mph
  5. 72° / 40°Monday looks fairly quiet.1% rain · Humidity 44–96% · Wind 6 mph

Environmental watch

Air quality + smoke

Air quality

Saint Louis area · Updated Thu 11:26 AM
62ModerateUS AQI

No fresh outlook yet.

62 is in the Moderate range (51–100). Most people can be active outside; if you’re unusually sensitive to fine particles, consider a shorter or easier outing.

Sky check

No plume detected overhead

Satellite view · Updated Thu 7:45 AM

Air near ground62 · Moderate US AQI

Rain, in motion · Past four hours

Lake St. Louis radar

Ready when you areSee what is moving toward Lake St. Louis.

Watch the last four hours of rain, then search any nearby trail, lake, or address.

View the official forecast ↗

Outdoor fire check

Thinking about a backyard fire?

Use extra caution.

There is no lower-concern three-hour stretch in the next 12 hours.

Next 12 hoursChoose a time to see what is driving the concern.
Selected timeNowUse caution

Thunder is possible.

Humidity
87%
Wind
7 mph
Gusts
13 mph

Check local rules. Weather is only part of the decision. Check city, county, and land-manager fire restrictions before lighting any outdoor fire.

Nearby regional view

Explore St. Louis

About 24 miles away, the St. Louis hub looks more deeply at St. Louis, MO-IL. It reflects that wider area rather than Lake St. Louis’s exact conditions.

About these readingsSources and local limits

Weather

Forecasts, alerts, and radar come from NOAA and the National Weather Service.

Air quality

This reading describes Saint Louis area, about 11 miles away. Conditions can differ at this exact spot.

Smoke

Satellite imagery shows smoke overhead. It cannot tell us how much smoke has reached breathing level.

This page represents Lake St. Louis, MO, so conditions can vary from street to street. Environmental data: AirNow · participating air agencies · preliminary real-time US AQI · NOAA Hazard Mapping System · satellite-observed smoke.