Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Newsletters
  • Advertising
  • Superior Accuracy™
Dangerous heat wave to expand east early this week, affecting 170 million people. Details here Chevron right

Alton, IN

80°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Alton

Indiana

80°
No results found.
Try searching for a city, zip code or point of interest.
settings
Alton, IN 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

Newsletters

Advertising

Superior Accuracy™

Video

Winter Center
Today

Hourly

 Daily Radar MinuteCast Monthly Air Quality Health & Activities

10 AM

79°
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
Sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™88°

WindSSE 4 mph

Air QualityFair

Max UV Index3 (Moderate)

Wind Gusts5 mph

Humidity93%

Indoor Humidity93% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling33300 ft

11 AM

81°
RealFeel® 94°
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
Sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™90°

WindSW 6 mph

Air QualityFair

Max UV Index5 (Moderate)

Wind Gusts6 mph

Humidity89%

Indoor Humidity89% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover9%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

84°
RealFeel® 97°
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
Mostly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™91°

WindSW 6 mph

Air QualityFair

Max UV Index8 (Very High)

Wind Gusts7 mph

Humidity76%

Indoor Humidity76% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover12%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

88°
RealFeel® 100°
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
Mostly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™94°

WindSW 6 mph

Air QualityFair

Max UV Index10 (Very High)

Wind Gusts7 mph

Humidity64%

Indoor Humidity64% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover18%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

92°
RealFeel® 104°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 1%
Chevron down
Mostly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™97°

WindSW 6 mph

Air QualityFair

Max UV Index11 (Extreme)

Wind Gusts7 mph

Humidity54%

Indoor Humidity54% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

93°
RealFeel® 105°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 6%
Chevron down
Mostly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™99°

WindSW 7 mph

Air QualityFair

Max UV Index10 (Very High)

Wind Gusts9 mph

Humidity51%

Indoor Humidity51% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover29%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

92°
RealFeel® 104°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 6%
Chevron down
Partly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™98°

WindSW 6 mph

Air QualityFair

Max UV Index8 (Very High)

Wind Gusts9 mph

Humidity53%

Indoor Humidity53% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover31%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

92°
RealFeel® 102°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 10%
Chevron down
Partly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™97°

WindSW 6 mph

Air QualityFair

Max UV Index5 (Moderate)

Wind Gusts10 mph

Humidity54%

Indoor Humidity54% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover32%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

90°
RealFeel® 98°
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 51%
Chevron down
Partly sunny w/ t-storms
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™94°

WindWSW 6 mph

Air QualityFair

Max UV Index3 (Moderate)

Wind Gusts9 mph

Humidity59%

Indoor Humidity59% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover34%

Rain0.04 in

Visibility6 mi

Cloud Ceiling30000 ft

7 PM

89°
RealFeel® 99°
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 47%
Chevron down
Partly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™96°

WindWSW 5 mph

Air QualityFair

Max UV Index2 (Low)

Wind Gusts6 mph

Humidity62%

Indoor Humidity62% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover34%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

88°
RealFeel® 98°
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 31%
Chevron down
Partly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™95°

WindWSW 4 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts5 mph

Humidity67%

Indoor Humidity67% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover31%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

85°
RealFeel® 94°
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 7%
Chevron down
Mostly sunny
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

RealFeel Shade™94°

WindSW 4 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts4 mph

Humidity74%

Indoor Humidity74% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

84°
RealFeel® 93°
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 7%
Chevron down
Mostly clear
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

WindSW 4 mph

Air QualityFair

Wind Gusts4 mph

Humidity76%

Indoor Humidity76% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

11 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 7%
Chevron down
Mostly clear
alerts

Heat Advisory

3:00 AM Sunday - 8:00 PM Wednesday

WindSSW 2 mph

Air QualityFair

Wind Gusts2 mph

Humidity77%

Indoor Humidity77% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

Further Ahead

Tomorrow

Thursday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Dangerous heat wave to envelop 170 million Americans through late June

4 hours ago

Weather News

Coast Guard ends search after 8 killed in Lake Tahoe boat capsizing

19 minutes ago

Severe Weather

'Ring of fire' thunderstorms to ride rim massive heat dome

1 hour ago

Weather Forecasts

Will it reach 100 degrees in NYC this week?

2 hours ago

AccuWeather Ready

Top 3 tips on lightning safety from a leading safety expert

3 hours ago

 More Stories

Featured Stories

Weather News

Summer that was hot 'gritty nightmare' inspired Pulitzer-winning novel

20 hours ago

Astronomy

Strange signals from Antarctic ice seem to defy laws of physics

23 hours ago

Climate

Your AI prompts could have a hidden environmental cost

21 hours ago

Weather News

The greatest hot-weather drink you’ve probably never heard of

21 hours ago

Weather News

‘Dragon Man’ DNA revelation puts a face to group of ancient humans

3 days ago
World North America United States Indiana Alton

Weather Near Alton:

  • Jeffersonville, IN
  • Louisville, KY
  • New Albany, IN
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
© 2025 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

...

...

...