For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

Air quality plummets in Northeast, Midwest due to wildfire smoke. Get the details.

Texas flood dangers grow as torrential downpours loom. Click for the forecast.

Granite City, IL

Location

Location News Videos

Use Current Location

Recent

Granite City

Illinois

No results found.

Try searching for a city, zip code or point of interest.

Create Your Account Unlock extended daily and hourly forecasts — all with your free account.

Have an account already? Log In

settings

Granite City, IL Weather

Today WinterCast Local {stormName} Tracker Hourly 10-Day 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

Hourly

10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

4 PM

97°

RealFeel® 106°

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.

3%

Hazy sunshine

RealFeel Shade™101°

Heat Index105°

WindNE 7 mph

Air QualityPoor

Max UV Index4.4 (Moderate)

Wind Gusts10 mph

Humidity44%

Indoor Humidity44% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility5 mi

Cloud Ceiling31000 ft

5 PM

94°

RealFeel® 101°

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.

3%

Hazy sunshine

RealFeel Shade™98°

Heat Index101°

WindNE 7 mph

Air QualityPoor

Max UV Index2.9 (Moderate)

Wind Gusts9 mph

Humidity46%

Indoor Humidity46% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover69%

Visibility5 mi

Cloud Ceiling30000 ft

6 PM

92°

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.

3%

Hazy sunshine

RealFeel Shade™95°

Heat Index98°

WindNE 6 mph

Air QualityPoor

Max UV Index1.8 (Low)

Wind Gusts9 mph

Humidity51%

Indoor Humidity51% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility5 mi

Cloud Ceiling30000 ft

7 PM

89°

RealFeel® 95°

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.

2%

Hazy sunshine

RealFeel Shade™93°

Heat Index95°

WindNE 6 mph

Air QualityPoor

Max UV Index1.0 (Low)

Wind Gusts8 mph

Humidity57%

Indoor Humidity57% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover65%

Visibility5 mi

Cloud Ceiling30000 ft

8 PM

86°

RealFeel® 91°

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.

1%

Partly sunny

RealFeel Shade™91°

Heat Index92°

WindENE 6 mph

Air QualityPoor

Max UV Index0.2 (Low)

Wind Gusts6 mph

Humidity62%

Indoor Humidity62% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

83°

RealFeel® 89°

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.

1%

Partly cloudy

Heat Index89°

WindENE 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity71%

Indoor Humidity71% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover35%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

81°

RealFeel® 88°

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.

1%

Mostly clear

Heat Index85°

WindENE 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity78%

Indoor Humidity78% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

79°

RealFeel® 86°

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.

1%

Mostly clear

Heat Index80°

WindENE 4 mph

Air QualityPoor

Wind Gusts5 mph

Humidity84%

Indoor Humidity84% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Granite City

AccuWeather's hourly forecast for Granite City provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 97° with a RealFeel® of 106°, hazy sunshine with a 3% 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.

Further Ahead

Tomorrow

Friday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather News

Air quality plummets in Boston, Toronto amid thick wildfire smoke

1 hour ago

Severe Weather

Texas flood dangers grow as more torrential downpours loom

7 hours ago

Weather Forecasts

Cooler days ahead for Northeast with storms, wildfire smoke

1 hour ago

Weather News

Minnesota wildfire evacuations underway as smoke threatens air quality

3 hours ago

Hurricane

Tropical trouble could boost southeast US flooding risk this weekend

8 hours ago

Featured Stories

Weather Forecasts

Monsoon to bring lightning, downpours and dust in western U.S.

1 hour ago

Weather News

New daylight saving time bill takes different approach to time changes

1 hour ago

Weather News

Pilot killed after aircraft crashes during Colorado wildfire fight

1 day ago

Recreation

Bison tosses Yellowstone visitor 8 feet into air during attack

1 day ago

Astronomy

Total solar eclipse: Where the moon will block the sun in August

1 day ago

World North America United States Illinois Granite City

Weather Near Granite City:

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 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 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

...

...

...