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Storms to hammer Central, Eastern US with flood, wind threat Chevron right
Dangerous heat and humidity to grip the Southeast Chevron right

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

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 Daily Radar MinuteCast Monthly Air Quality Health & Activities

9 PM

83°
RealFeel® 92°
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.
LEARN MORE
rain drop 64%
Chevron down
Mostly cloudy w/ t-storms
alerts

Extreme Heat Warning

12:00 PM Saturday - 7:00 PM Tuesday

WindS 6 mph

Air QualityFair

Wind Gusts14 mph

Humidity84%

Indoor Humidity84% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover58%

Rain0.07 in

Visibility5 mi

Cloud Ceiling13000 ft

10 PM

82°
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.
LEARN MORE
rain drop 49%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

12:00 PM Saturday - 7:00 PM Tuesday

WindSSW 6 mph

Air QualityPoor

Wind Gusts13 mph

Humidity81%

Indoor Humidity81% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

82°
RealFeel® 90°
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.
LEARN MORE
rain drop 17%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

12:00 PM Saturday - 7:00 PM Tuesday

WindSSW 6 mph

Air QualityPoor

Wind Gusts14 mph

Humidity82%

Indoor Humidity82% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

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World North America United States Missouri O'Fallon

Weather Near O'Fallon:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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