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O'Fallon, MO

86°F
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O'Fallon

Missouri

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O'Fallon, MO Weather
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Today

Hourly

 Daily Radar MinuteCast Monthly Air Quality Health & Activities

10 PM

83°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
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rain drop 18%
Chevron down
Partly cloudy
alerts

Extreme Heat Warning

12:00 PM Saturday - 7:00 PM Tuesday

WindSE 5 mph

Air QualityFair

Wind Gusts12 mph

Humidity74%

Indoor Humidity74% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

80°
RealFeel® 88°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 47%
Chevron down
Partly cloudy
alerts

Extreme Heat Warning

12:00 PM Saturday - 7:00 PM Tuesday

WindSSE 5 mph

Air QualityFair

Wind Gusts12 mph

Humidity80%

Indoor Humidity80% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

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World North America United States Missouri O'Fallon

Weather Near O'Fallon:

  • St. Charles, MO
  • St. Louis, MO
  • St. Peters, MO
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