Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Springlike warmth in East to be erased by upcoming cold wave. Get the forecast. Chevron right

Alton, IL

44°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Alton

Illinois

44°
No results found.
Try searching for a city, zip code or point of interest.
Create Account Unlock extended daily forecasts and additional saved locations — all with your free account.
Let's Go Chevron right
Have an account already? Login
settings
Alton, IL Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today

Hourly

 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

8 AM

43°
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
Partly sunny

RealFeel Shade™32°

WindWNW 16 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts22 mph

Humidity90%

Indoor Humidity35% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

44°
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
Partly sunny

RealFeel Shade™33°

WindWNW 15 mph

Air QualityExcellent

Max UV Index1.3 (Low)

Wind Gusts20 mph

Humidity79%

Indoor Humidity33% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

45°
RealFeel® 38°
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™36°

WindWNW 14 mph

Air QualityExcellent

Max UV Index1.9 (Low)

Wind Gusts18 mph

Humidity75%

Indoor Humidity32% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

47°
RealFeel® 41°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™38°

WindNW 13 mph

Air QualityExcellent

Max UV Index2.3 (Low)

Wind Gusts18 mph

Humidity71%

Indoor Humidity32% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

47°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™40°

WindNW 12 mph

Air QualityExcellent

Max UV Index2.4 (Low)

Wind Gusts16 mph

Humidity69%

Indoor Humidity32% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

49°
RealFeel® 48°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™44°

WindNNW 8 mph

Air QualityExcellent

Max UV Index2.3 (Low)

Wind Gusts12 mph

Humidity65%

Indoor Humidity33% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

51°
RealFeel® 51°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™47°

WindNNW 7 mph

Air QualityExcellent

Max UV Index1.9 (Low)

Wind Gusts10 mph

Humidity60%

Indoor Humidity32% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

50°
RealFeel® 49°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™47°

WindN 7 mph

Air QualityExcellent

Max UV Index1.3 (Low)

Wind Gusts9 mph

Humidity62%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

48°
RealFeel® 47°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™47°

WindNNE 6 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts9 mph

Humidity66%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

46°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindNE 6 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity73%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

44°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindENE 5 mph

Air QualityFair

Wind Gusts8 mph

Humidity76%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

42°
RealFeel® 41°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

WindENE 5 mph

Air QualityFair

Wind Gusts9 mph

Humidity82%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

41°
RealFeel® 40°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

WindENE 5 mph

Air QualityFair

Wind Gusts9 mph

Humidity84%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

41°
RealFeel® 39°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

WindE 5 mph

Air QualityFair

Wind Gusts7 mph

Humidity85%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

41°
RealFeel® 39°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

WindE 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity86%

Indoor Humidity31% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

40°
RealFeel® 39°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

WindE 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity87%

Indoor Humidity31% (Slightly Dry)

Dew Point36° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling19500 ft

Further Ahead

Tomorrow

Sunday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Astronomy

NASA to bring Crew-11 astronauts home early after medical issue aboard...

10 hours ago

Severe Weather

Snow, flooding and severe weather to unfold in central, eastern US

2 hours ago

Winter Weather

Juneau, Alaska, braces for more snow: 'There's nowhere to put it'

19 hours ago

Weather Forecasts

Springlike warmth in East to be replaced by cold air, snowstorm risk

2 hours ago

Weather Forecasts

Pineapple Express to drench Washington, British Columbia and Alaska

2 hours ago

 More Stories

Featured Stories

Astronomy

Newly discovered asteroid spins at record-breaking speed

17 hours ago

Weather News

Families face complex challenges 1 year after Eaton, Palisades fires

1 day ago

Astronomy

Meteor showers 2026: The best nights to see shooting stars

18 hours ago

Climate

Climate risk reshaping homeownership decisions, study finds

1 day ago

Astronomy

Hubble telescope spots ‘failed’ starless galaxy known as Cloud 9

2 days ago
World North America United States Illinois Alton

Weather Near Alton:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...