Hourly Weather Forecast - Alton, IL

10 AM
65°F
0%
4mph
WSW
Sunny
Humidity
56%
Feels like
65°F
Dew Point
49°F
11 AM
71°F
0%
5mph
WSW
Sunny
Humidity
48%
Feels like
71°F
Dew Point
50°F
12 PM
76°F
0%
6mph
WSW
Mostly Sunny
Humidity
40%
Feels like
76°F
Dew Point
50°F
1 PM
80°F
0%
7mph
WSW
Sunny
Humidity
35%
Feels like
80°F
Dew Point
50°F
2 PM
82°F
0%
8mph
W
Sunny
Humidity
32%
Feels like
81°F
Dew Point
50°F
3 PM
84°F
0%
9mph
W
Mostly Sunny
Humidity
30%
Feels like
82°F
Dew Point
49°F
4 PM
84°F
0%
9mph
W
Mostly Sunny
Humidity
30%
Feels like
82°F
Dew Point
49°F
5 PM
83°F
0%
7mph
WNW
Mostly Sunny
Humidity
31%
Feels like
81°F
Dew Point
49°F
6 PM
81°F
0%
6mph
WNW
Mostly Sunny
Humidity
34%
Feels like
80°F
Dew Point
50°F
7 PM
77°F
0%
4mph
NW
Partly Cloudy
Humidity
39%
Feels like
77°F
Dew Point
51°F
7:12 PM
8 PM
74°F
0%
4mph
NNW
Partly Cloudy
Humidity
45%
Feels like
74°F
Dew Point
51°F
9 PM
71°F
0%
4mph
N
Partly Cloudy
Humidity
50%
Feels like
71°F
Dew Point
51°F
10 PM
68°F
0%
4mph
N
Partly Cloudy
Humidity
55%
Feels like
68°F
Dew Point
51°F
11 PM
66°F
0%
4mph
NNE
Partly Cloudy
Humidity
59%
Feels like
66°F
Dew Point
51°F

Today's High Temperature Outlook

Dangerous Heat Continues Across the Southwest

Dozens of record high temperatures will be challenged or shattered across the Southwest today.

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Today's Weather Outlook

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Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

(Image provided by Pixabay.com)

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