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O'Fallon, IL

60°F
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O'Fallon

Illinois

60°
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O'Fallon, IL Weather
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 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

12 AM

64°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindESE 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity90%

Indoor Humidity78% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

1 AM

63°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindESE 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity93%

Indoor Humidity77% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

2 AM

62°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindESE 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity95%

Indoor Humidity77% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

3 AM

62°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindESE 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity95%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

4 AM

61°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindESE 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity96%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

61°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindESE 5 mph

Wind Gusts6 mph

Humidity97%

Indoor Humidity75% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

60°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindESE 5 mph

Wind Gusts6 mph

Humidity98%

Indoor Humidity74% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

59°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™59°

WindESE 5 mph

Max UV Index0.0 (Low)

Wind Gusts6 mph

Humidity100%

Indoor Humidity72% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

63°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™64°

WindESE 5 mph

Max UV Index0.7 (Low)

Wind Gusts6 mph

Humidity93%

Indoor Humidity77% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

69°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™67°

WindSE 5 mph

Max UV Index1.7 (Low)

Wind Gusts6 mph

Humidity79%

Indoor Humidity79% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

75°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™74°

WindSE 6 mph

Max UV Index2.5 (Moderate)

Wind Gusts7 mph

Humidity67%

Indoor Humidity67% (Humid)

Dew Point63° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

79°
RealFeel® 83°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™77°

WindSE 6 mph

Max UV Index3.6 (Moderate)

Wind Gusts8 mph

Humidity59%

Indoor Humidity59% (Humid)

Dew Point63° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover20%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

82°
RealFeel® 87°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™81°

WindSSE 6 mph

Max UV Index4.3 (Moderate)

Wind Gusts8 mph

Humidity52%

Indoor Humidity52% (Humid)

Dew Point63° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

85°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™84°

WindSSE 6 mph

Max UV Index4.6 (Moderate)

Wind Gusts8 mph

Humidity47%

Indoor Humidity47% (Humid)

Dew Point63° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

87°
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 1%
Chevron down
Mostly sunny

RealFeel Shade™86°

WindSSE 6 mph

Max UV Index4.3 (Moderate)

Wind Gusts8 mph

Humidity43%

Indoor Humidity43% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

90°
RealFeel® 93°
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 1%
Chevron down
Mostly sunny

RealFeel Shade™88°

WindSSE 6 mph

Max UV Index3.6 (Moderate)

Wind Gusts6 mph

Humidity38%

Indoor Humidity38% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

88°
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 1%
Chevron down
Mostly sunny

RealFeel Shade™87°

WindSSE 5 mph

Max UV Index2.5 (Moderate)

Wind Gusts6 mph

Humidity40%

Indoor Humidity40% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

87°
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 1%
Chevron down
Mostly sunny

RealFeel Shade™85°

WindS 6 mph

Max UV Index1.7 (Low)

Wind Gusts6 mph

Humidity42%

Indoor Humidity42% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

84°
RealFeel® 83°
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 1%
Chevron down
Mostly sunny

RealFeel Shade™83°

WindSW 6 mph

Max UV Index0.7 (Low)

Wind Gusts7 mph

Humidity48%

Indoor Humidity48% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

80°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 2%
Chevron down
Mostly clear

WindSW 6 mph

Wind Gusts7 mph

Humidity57%

Indoor Humidity57% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

76°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 4%
Chevron down
Mostly clear

WindSSW 6 mph

Wind Gusts7 mph

Humidity65%

Indoor Humidity65% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

74°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 4%
Chevron down
Mostly clear

WindS 6 mph

Wind Gusts7 mph

Humidity74%

Indoor Humidity74% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

71°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 4%
Chevron down
Mostly clear

WindS 6 mph

Wind Gusts6 mph

Humidity80%

Indoor Humidity80% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

68°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 4%
Chevron down
Mostly clear

WindS 6 mph

Wind Gusts6 mph

Humidity87%

Indoor Humidity87% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

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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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