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St. Charles, MO

77°F
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St. Charles

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St. Charles, MO Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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9 AM

72°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™71°

WindNW 6 mph

Air QualityPoor

Max UV Index2.8 (Moderate)

Wind Gusts6 mph

Humidity72%

Indoor Humidity72% (Humid)

Dew Point63° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling26700 ft

10 AM

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

RealFeel Shade™74°

WindNNW 6 mph

Air QualityPoor

Max UV Index4.6 (Moderate)

Wind Gusts7 mph

Humidity67%

Indoor Humidity67% (Humid)

Dew Point63° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

77°
RealFeel® 86°
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
Intermittent clouds

RealFeel Shade™76°

WindNNW 6 mph

Air QualityPoor

Max UV Index7.7 (Very High)

Wind Gusts7 mph

Humidity62%

Indoor Humidity62% (Humid)

Dew Point64° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover55%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

80°
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
Partly sunny

RealFeel Shade™78°

Heat Index80°

WindNNW 7 mph

Air QualityPoor

Max UV Index10.1 (Very High)

Wind Gusts8 mph

Humidity57%

Indoor Humidity57% (Humid)

Dew Point63° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover47%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

82°
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 0%
Chevron down
Partly sunny

RealFeel Shade™80°

Heat Index83°

WindN 6 mph

Air QualityUnhealthy

Max UV Index11.1 (Extreme)

Wind Gusts7 mph

Humidity53%

Indoor Humidity53% (Humid)

Dew Point63° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover47%

Visibility10 mi

Cloud Ceiling30000 ft

2 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 0%
Chevron down
Intermittent clouds

RealFeel Shade™82°

Heat Index84°

WindNNW 6 mph

Air QualityUnhealthy

Max UV Index9.4 (Very High)

Wind Gusts7 mph

Humidity50%

Indoor Humidity50% (Humid)

Dew Point63° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover58%

Visibility10 mi

Cloud Ceiling24900 ft

3 PM

84°
RealFeel® 89°
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
Intermittent clouds

RealFeel Shade™82°

Heat Index85°

WindNNW 7 mph

Air QualityUnhealthy

Max UV Index5.1 (Moderate)

Wind Gusts8 mph

Humidity48%

Indoor Humidity48% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover73%

Visibility10 mi

Cloud Ceiling19800 ft

4 PM

84°
RealFeel® 86°
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 cloudy

RealFeel Shade™82°

Heat Index85°

WindNW 7 mph

Air QualityUnhealthy

Max UV Index2.5 (Low)

Wind Gusts9 mph

Humidity47%

Indoor Humidity47% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover83%

Visibility10 mi

Cloud Ceiling14700 ft

5 PM

85°
RealFeel® 86°
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 cloudy

RealFeel Shade™83°

Heat Index86°

WindNNW 7 mph

Air QualityUnhealthy

Max UV Index2.1 (Low)

Wind Gusts9 mph

Humidity46%

Indoor Humidity46% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover80%

Visibility10 mi

Cloud Ceiling19800 ft

6 PM

83°
RealFeel® 84°
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
Intermittent clouds

RealFeel Shade™82°

Heat Index84°

WindN 7 mph

Air QualityUnhealthy

Max UV Index1.7 (Low)

Wind Gusts10 mph

Humidity50%

Indoor Humidity50% (Humid)

Dew Point63° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover69%

Visibility10 mi

Cloud Ceiling24900 ft

7 PM

82°
RealFeel® 82°
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
Intermittent clouds

RealFeel Shade™81°

Heat Index83°

WindNNE 7 mph

Air QualityUnhealthy

Max UV Index1.2 (Low)

Wind Gusts10 mph

Humidity53%

Indoor Humidity53% (Humid)

Dew Point64° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover58%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

80°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 4%
Chevron down
Cloudy

RealFeel Shade™79°

Heat Index82°

WindNE 7 mph

Air QualityUnhealthy

Max UV Index0.2 (Low)

Wind Gusts9 mph

Humidity58%

Indoor Humidity58% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

78°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 4%
Chevron down
Cloudy

WindENE 7 mph

Air QualityPoor

Wind Gusts9 mph

Humidity64%

Indoor Humidity64% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

76°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 4%
Chevron down
Cloudy

WindENE 7 mph

Air QualityPoor

Wind Gusts8 mph

Humidity69%

Indoor Humidity69% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

74°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 6%
Chevron down
Cloudy

WindE 7 mph

Air QualityPoor

Wind Gusts8 mph

Humidity74%

Indoor Humidity74% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for St. Charles

AccuWeather's hourly forecast for St. Charles provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 72° with a RealFeel® of 76°, intermittent clouds with a 0% 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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Weather Near St. Charles:

  • O'Fallon, MO
  • Springfield, IL
  • St. Louis, MO
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