Hourly Weather Forecast - Alton, IL

12 AM
28°F
0%
1mph
N
Clear
Humidity
79%
Feels like
28°F
Dew Point
23°F
1 AM
28°F
0%
1mph
NNW
Clear
Humidity
81%
Feels like
28°F
Dew Point
23°F
2 AM
27°F
0%
1mph
NNW
Clear
Humidity
84%
Feels like
27°F
Dew Point
22°F
3 AM
26°F
0%
1mph
NNW
Clear
Humidity
86%
Feels like
26°F
Dew Point
22°F
4 AM
26°F
0%
1mph
N
Clear
Humidity
88%
Feels like
26°F
Dew Point
22°F
5 AM
26°F
0%
1mph
NNE
Mostly Clear
Humidity
87%
Feels like
26°F
Dew Point
22°F
6 AM
26°F
0%
1mph
NE
Mostly Clear
Humidity
85%
Feels like
26°F
Dew Point
22°F
7 AM
28°F
0%
1mph
ENE
Partly Cloudy
Humidity
81%
Feels like
28°F
Dew Point
23°F
7:19 AM
8 AM
29°F
0%
1mph
E
Partly Cloudy
Humidity
78%
Feels like
29°F
Dew Point
23°F
9 AM
32°F
0%
2mph
ESE
Mostly Sunny
Humidity
73%
Feels like
32°F
Dew Point
24°F
10 AM
35°F
0%
2mph
SE
Mostly Sunny
Humidity
68%
Feels like
35°F
Dew Point
25°F
11 AM
37°F
0%
3mph
SSE
Mostly Sunny
Humidity
64%
Feels like
37°F
Dew Point
26°F
12 PM
39°F
0%
3mph
SSE
Partly Cloudy
Humidity
62%
Feels like
37°F
Dew Point
27°F
1 PM
40°F
0%
4mph
SSE
Partly Cloudy
Humidity
61%
Feels like
38°F
Dew Point
28°F
2 PM
41°F
0%
4mph
SSE
Mostly Cloudy
Humidity
61%
Feels like
38°F
Dew Point
29°F
3 PM
41°F
0%
4mph
SSE
Cloudy
Humidity
63%
Feels like
38°F
Dew Point
29°F
4 PM
40°F
0%
4mph
SE
Mostly Cloudy
Humidity
68%
Feels like
37°F
Dew Point
30°F
4:51 PM
5 PM
38°F
0%
5mph
SE
Partly Cloudy
Humidity
74%
Feels like
35°F
Dew Point
31°F
6 PM
37°F
0%
5mph
SE
Partly Cloudy
Humidity
79%
Feels like
33°F
Dew Point
31°F
7 PM
37°F
0%
6mph
SSE
Mostly Clear
Humidity
82%
Feels like
32°F
Dew Point
32°F
8 PM
37°F
0%
6mph
SSE
Clear
Humidity
83%
Feels like
32°F
Dew Point
32°F
9 PM
36°F
0%
6mph
SSE
Clear
Humidity
84%
Feels like
31°F
Dew Point
32°F
10 PM
36°F
0%
6mph
SSE
Clear
Humidity
86%
Feels like
31°F
Dew Point
32°F
11 PM
36°F
0%
6mph
SSE
Clear
Humidity
88%
Feels like
31°F
Dew Point
33°F

Wednesday's Weather Outlook

Wednesday's Weather Outlook

After an overall quieter day of weather on Tuesday, Mother Nature brings a soggy, snowy forecast.

St. Louis Tornado - May 16th, 2025

2025 Year in Review: Billion-Dollar Disasters From May through June

EF3 tornado damage near Plantersville, Alabama

2025 Year in Review: Billion-Dollar Disasters From February Through April

Photos and videos from the Palisades Fire that started in the City of Los Angeles, January 8, 2025. (CAL FIRE_Official via Wikimedia Commons)

2025 Year in Review: Billion Dollar Disasters - The California Wildfires

Large wall of dust approaching Phoenix Sky Harbor Airport at around 5:30 PM MST (Photo credit: Mike Olbinski via NWS)

2025 Year in Review: Extreme Weather - July Through December

A frame from an automated video of a tornado and its mesocyclone that derailed multiple train cars near Enderlin, North Dakota and destroyed multiple homes on June 20, 2025. (ChrisWx via Wikimedia Commons)

2025 Year in Review: Extreme Weather - January through June

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide