NimbocastBelleville, IL Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for Belleville, Saint Clair County, Illinois.
Updated Jul 29, 2026, 2:17 PM local time · Radar refreshes every 5 minutes
☀️
Belleville
88°F
Wind 6 mph
Humidity 44%
Cloud cover 0%
UV index 8
Alerts 0
Active alerts
✓
No active National Weather Service alerts for Belleville, IL.
Belleville weather radar
Light
Heavy
Next 24 hours
Now
☀️
88°F
3 PM
☀️
89°F
4 PM
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89°F
5 PM
☀️
88°F
6 PM
☀️
87°F
7 PM
☀️
86°F
8 PM
☀️
83°F
9 PM
☀️
80°F
10 PM
☀️
78°F
11 PM
☀️
76°F
12 AM
☀️
75°F
1 AM
☀️
73°F
2 AM
☀️
72°F
3 AM
☀️
71°F
4 AM
☀️
69°F
5 AM
☀️
68°F
6 AM
☀️
67°F
7 AM
☀️
68°F
8 AM
☀️
73°F
9 AM
☀️
77°F
10 AM
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81°F
11 AM
☀️
84°F
12 PM
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87°F
1 PM
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89°F
7-day forecast
Today
Jul 29
☀️
89°F
69°F
Thu
Jul 30
☁️
91°F
67°F
Fri
Jul 31
🌦️
81°F
69°F
72%
Sat
Aug 1
🌦️
73°F
67°F
72%
Sun
Aug 2
☁️
79°F
63°F
16%
Mon
Aug 3
☀️
81°F
61°F
15%
Tue
Aug 4
⛅
84°F
63°F
14%
Weather near Belleville
5 mi
Fairview Heights, IL6 mi
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Alerts are relayed from the National Weather Service and may lag
the official source. In a life-threatening situation always follow
weather.gov and local emergency
broadcasts.