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Severe thunderstorms to rumble across the central, eastern US this week. Click for the forecast.

O'Fallon, IL

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O'Fallon, IL Weather

Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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11 AM

76°

RealFeel® 71°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

76%

Thunderstorms

RealFeel Shade™70°

WindSSW 15 mph

Air QualityPoor

Max UV Index1.4 (Low)

Wind Gusts21 mph

Humidity65%

Indoor Humidity65% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.05 in

Visibility10 mi

Cloud Ceiling13100 ft

12 PM

74°

RealFeel® 71°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

79%

Thunderstorms

RealFeel Shade™70°

WindSSW 16 mph

Air QualityPoor

Max UV Index1.5 (Low)

Wind Gusts23 mph

Humidity78%

Indoor Humidity78% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Rain0.06 in

Visibility5 mi

Cloud Ceiling4000 ft

1 PM

75°

RealFeel® 72°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

79%

Thunderstorms

RealFeel Shade™70°

WindSSW 16 mph

Air QualityPoor

Max UV Index1.9 (Low)

Wind Gusts27 mph

Humidity78%

Indoor Humidity78% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.06 in

Visibility5 mi

Cloud Ceiling10100 ft

2 PM

76°

RealFeel® 76°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Cloudy

RealFeel Shade™74°

WindSSW 16 mph

Air QualityPoor

Max UV Index2.2 (Low)

Wind Gusts29 mph

Humidity73%

Indoor Humidity73% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling11600 ft

3 PM

77°

RealFeel® 76°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Cloudy

RealFeel Shade™75°

WindSSW 16 mph

Air QualityPoor

Max UV Index1.7 (Low)

Wind Gusts24 mph

Humidity66%

Indoor Humidity66% (Humid)

Dew Point65° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling13100 ft

4 PM

73°

RealFeel® 68°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

58%

Thunderstorms

RealFeel Shade™68°

WindSSW 16 mph

Air QualityPoor

Max UV Index0.7 (Low)

Wind Gusts21 mph

Humidity91%

Indoor Humidity91% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.27 in

Visibility3 mi

Cloud Ceiling4000 ft

5 PM

73°

RealFeel® 73°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

40%

Cloudy

RealFeel Shade™73°

WindSSW 16 mph

Air QualityPoor

Max UV Index0.9 (Low)

Wind Gusts23 mph

Humidity86%

Indoor Humidity86% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling16100 ft

6 PM

72°

RealFeel® 71°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

34%

Cloudy

RealFeel Shade™71°

WindSW 15 mph

Air QualityPoor

Max UV Index0.6 (Low)

Wind Gusts25 mph

Humidity82%

Indoor Humidity82% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling17500 ft

7 PM

72°

RealFeel® 70°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

37%

Cloudy

RealFeel Shade™70°

WindSW 15 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts28 mph

Humidity74%

Indoor Humidity74% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling18900 ft

8 PM

71°

RealFeel® 68°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

45%

Cloudy

WindSSW 14 mph

Air QualityFair

Wind Gusts27 mph

Humidity80%

Indoor Humidity80% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling17300 ft

9 PM

70°

RealFeel® 67°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Cloudy

WindSSW 14 mph

Air QualityFair

Wind Gusts27 mph

Humidity83%

Indoor Humidity83% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling15800 ft

10 PM

70°

RealFeel® 63°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

53%

Thunderstorms

WindSSW 14 mph

Air QualityFair

Wind Gusts24 mph

Humidity83%

Indoor Humidity83% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.16 in

Visibility4 mi

Cloud Ceiling2000 ft

11 PM

69°

RealFeel® 63°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

51%

Thunderstorms

WindSSW 15 mph

Air QualityFair

Wind Gusts22 mph

Humidity83%

Indoor Humidity83% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.03 in

Visibility6 mi

Cloud Ceiling2000 ft

Hourly Weather Forecast for O'Fallon

AccuWeather's hourly forecast for O'Fallon provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 76° with a RealFeel® of 71°, thunderstorms with a 76% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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World North America United States Illinois O'Fallon

Weather Near O'Fallon:

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

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