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Alton, IL

40°F
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Alton

Illinois

40°
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Alton, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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11 AM

42°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

RealFeel Shade™32°

WindNNW 15 mph

Air QualityExcellent

Max UV Index0.9 (Low)

Wind Gusts24 mph

Humidity54%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling12400 ft

12 PM

42°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

RealFeel Shade™32°

WindNNW 16 mph

Air QualityExcellent

Max UV Index0.8 (Low)

Wind Gusts25 mph

Humidity49%

Indoor Humidity34% (Dry)

Dew Point24° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3700 ft

1 PM

43°
RealFeel® 35°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™33°

WindNNW 14 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts23 mph

Humidity47%

Indoor Humidity34% (Dry)

Dew Point24° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling7300 ft

2 PM

44°
RealFeel® 36°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™34°

WindNNW 14 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts24 mph

Humidity46%

Indoor Humidity34% (Dry)

Dew Point24° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover62%

Visibility10 mi

Cloud Ceiling11000 ft

3 PM

43°
RealFeel® 36°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™33°

WindNNW 13 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts25 mph

Humidity47%

Indoor Humidity33% (Dry)

Dew Point24° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

41°
RealFeel® 34°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™34°

WindNNW 12 mph

Air QualityExcellent

Max UV Index0.8 (Low)

Wind Gusts22 mph

Humidity49%

Indoor Humidity33% (Dry)

Dew Point24° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

40°
RealFeel® 34°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindNNW 9 mph

Air QualityExcellent

Wind Gusts17 mph

Humidity53%

Indoor Humidity34% (Dry)

Dew Point24° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

38°
RealFeel® 33°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindNNW 8 mph

Air QualityFair

Wind Gusts13 mph

Humidity60%

Indoor Humidity35% (Dry)

Dew Point25° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

37°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindN 7 mph

Air QualityFair

Wind Gusts12 mph

Humidity65%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

34°
RealFeel® 30°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindN 7 mph

Air QualityFair

Wind Gusts12 mph

Humidity73%

Indoor Humidity36% (Dry)

Dew Point26° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

34°
RealFeel® 29°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindN 7 mph

Air QualityFair

Wind Gusts10 mph

Humidity76%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

33°
RealFeel® 28°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindN 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity79%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

31°
RealFeel® 27°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindN 6 mph

Air QualityFair

Wind Gusts8 mph

Humidity81%

Indoor Humidity36% (Dry)

Dew Point26° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Alton

AccuWeather's hourly forecast for Alton provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 42° with a RealFeel® of 32°, cloudy 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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