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Polar vortex to usher in frigid air, and a storm may brew with it. Click for details. Chevron right
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Alton, IL

23°F
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Alton

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Alton, IL Weather
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Winter Center

Today

 WinterCast Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Today's Weather

Tue, Dec 2

Sun and areas of low clouds and very cold Hi: 28°

Tonight: Partly to mostly cloudy and cold Lo: 19°

Current Weather

12:24 AM

23°F
RealFeel® 24°
Mostly cloudy More Details
Wind NW 3 mph
Wind Gusts 9 mph
Air Quality Poor

Looking Ahead

Noticeably colder Thursday

WinterCast®

Started
Mon Morning - Late Mon Night

Snow

Ending 35 minutes

Alton Weather Radar

Alton Weather Radar
Static Radar Temporarily Unavailable
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Clouds
Temperature

Hourly Weather

1 AM 23°
rain drop 25%
2 AM 22°
rain drop 20%
3 AM 21°
rain drop 20%
4 AM 20°
rain drop 20%
5 AM 19°
rain drop 20%
6 AM 18°
rain drop 13%
7 AM 17°
rain drop 0%
8 AM 18°
rain drop 0%
9 AM 20°
rain drop 0%
10 AM 22°
rain drop 0%
11 AM 24°
rain drop 0%
12 PM 26°
rain drop 0%

10-Day Weather Forecast

Today

12/2

28° 19°

Very cold

Night: Some clouds; cold
0%

Wed

12/3

37° 9°

Some sun, then clouds; cold

Cloudy and bitterly cold
25%

Thu

12/4

20° 6°

Partly sunny and very cold

Mainly clear and frigid
6%

Fri

12/5

35° 17°

Partly sunny and not as cold

Mainly clear and cold
9%

Sat

12/6

31° 26°

Mostly cloudy and quite cold

Cloudy with a flurry late
15%

Sun

12/7

30° 18°

Very cold with some sun

Partly cloudy and cold
17%

Mon

12/8

32° 28°

Cold with clouds; p.m. snow

Low clouds
64%

Tue

12/9

34° 32°

Cold with low clouds

Partly cloudy
5%

Wed

12/10

38° 28°

Times of clouds and sun

Partly cloudy
9%

Thu

12/11

43° 23°

Cloudy with afternoon snow

Cold; a bit of evening snow
80%

Sun & Moon

9 hrs 38 mins
Rise 7:01 AM
Set 4:39 PM
Waxing Gibbous
Rise 2:37 PM
Set 5:33 AM

Air Quality

See More
Air Quality Poor

The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.

Allergy Outlook

See All
Tree Pollen Low Data is not supported in this location Ragweed Pollen Low Data is not supported in this location Mold Low Data is not supported in this location Grass Pollen Low Data is not supported in this location Dust & Dander Very High Data is not supported in this location

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Weather Near Alton:

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