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Extreme risk of severe weather, widespread destructive winds in the Plains into Sunday night. Click for details Chevron right

Alton, IL

69°F
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Alton

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Alton, IL Weather
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10 AM

70°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 6%
Chevron down
Intermittent clouds

RealFeel Shade™68°

WindWNW 8 mph

Air QualityPoor

Max UV Index5 (Moderate)

Wind Gusts12 mph

Humidity80%

Indoor Humidity80% (Humid)

Dew Point64° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover61%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

72°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 7%
Chevron down
Intermittent clouds

RealFeel Shade™70°

WindW 8 mph

Air QualityPoor

Max UV Index6 (High)

Wind Gusts13 mph

Humidity73%

Indoor Humidity73% (Humid)

Dew Point63° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

75°
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 7%
Chevron down
Intermittent clouds

RealFeel Shade™73°

WindW 9 mph

Air QualityPoor

Max UV Index9 (Very High)

Wind Gusts15 mph

Humidity64%

Indoor Humidity64% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

78°
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 11%
Chevron down
Cloudy

RealFeel Shade™76°

WindW 9 mph

Air QualityPoor

Max UV Index7 (High)

Wind Gusts17 mph

Humidity59%

Indoor Humidity59% (Humid)

Dew Point63° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

80°
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 19%
Chevron down
Mostly cloudy

RealFeel Shade™77°

WindW 10 mph

Air QualityPoor

Max UV Index6 (High)

Wind Gusts18 mph

Humidity57%

Indoor Humidity57% (Humid)

Dew Point63° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover88%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

81°
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 19%
Chevron down
Mostly cloudy

RealFeel Shade™78°

WindWSW 10 mph

Air QualityPoor

Max UV Index5 (Moderate)

Wind Gusts20 mph

Humidity54%

Indoor Humidity54% (Humid)

Dew Point63° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover83%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

82°
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 24%
Chevron down
Mostly cloudy

RealFeel Shade™80°

WindWSW 10 mph

Air QualityPoor

Max UV Index4 (Moderate)

Wind Gusts21 mph

Humidity52%

Indoor Humidity52% (Humid)

Dew Point63° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover79%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

80°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Mostly cloudy

RealFeel Shade™78°

WindW 12 mph

Air QualityPoor

Max UV Index2 (Low)

Wind Gusts20 mph

Humidity57%

Indoor Humidity57% (Humid)

Dew Point64° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover83%

Visibility10 mi

Cloud Ceiling23600 ft

6 PM

76°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

RealFeel Shade™73°

WindWNW 12 mph

Air QualityPoor

Max UV Index1 (Low)

Wind Gusts16 mph

Humidity75%

Indoor Humidity75% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover88%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

7 PM

74°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™74°

WindNW 12 mph

Air QualityPoor

Max UV Index0 (Low)

Wind Gusts14 mph

Humidity82%

Indoor Humidity82% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling10900 ft

8 PM

72°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Intermittent clouds

RealFeel Shade™71°

WindNNW 9 mph

Air QualityPoor

Max UV Index0 (Low)

Wind Gusts20 mph

Humidity80%

Indoor Humidity80% (Humid)

Dew Point66° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover70%

Visibility5 mi

Cloud Ceiling4000 ft

9 PM

69°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Mostly cloudy w/ t-storms

WindN 12 mph

Air QualityPoor

Wind Gusts18 mph

Humidity82%

Indoor Humidity82% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Rain0.15 in

Visibility10 mi

Cloud Ceiling4000 ft

10 PM

67°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Intermittent clouds

WindNNE 12 mph

Air QualityFair

Wind Gusts16 mph

Humidity84%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

64°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 34%
Chevron down
Intermittent clouds

WindN 10 mph

Air QualityFair

Wind Gusts14 mph

Humidity86%

Indoor Humidity75% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

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Weather Near Alton:

  • O'Fallon, MO
  • St. Charles, MO
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