Alton, IL

Right Now
81°
Cloudy
  • Humidity: 64%
  • Feels Like: 85°
  • Heat Index: 85°
  • Wind: 13 mph
  • Wind Chill: 81°
  • UV Index: 6 High
  • Sunrise: 06:46:57 AM
  • Sunset: 07:00:16 PM
  • Dew Point: 68°
  • Visibility: 10 mi

Today

Considerable clouds this morning. Some decrease in clouds later in the day. High 86F. Winds S at 10 to 20 mph.

Tonight

Partly cloudy this evening. Showers and a possible thunderstorm developing after midnight. Low 66F. Winds SSW at 10 to 20 mph. Chance of rain 70%.

Tomorrow

Cloudy with rain ending in the afternoon. Cooler. High near 70F. Winds NNW at 10 to 20 mph. Chance of rain 70%.

Next 12 Hours

Time
Temp
Precip
1 PM
83°
7%
1 PM
83°

Wind: S @ 13mph

Precip: 7% Chance

Humidity: 61%

Wind Chill: 83°

Heat Index: 87°

UV Index: 5 Moderate

Visibility: 10 mi

2 PM
84°
3%
2 PM
84°

Wind: S @ 14mph

Precip: 3% Chance

Humidity: 58%

Wind Chill: 84°

Heat Index: 89°

UV Index: 5 Moderate

Visibility: 10 mi

3 PM
85°
5%
3 PM
85°

Wind: S @ 15mph

Precip: 5% Chance

Humidity: 55%

Wind Chill: 85°

Heat Index: 90°

UV Index: 4 Moderate

Visibility: 10 mi

4 PM
85°
2%
4 PM
85°

Wind: S @ 14mph

Precip: 2% Chance

Humidity: 57%

Wind Chill: 85°

Heat Index: 89°

UV Index: 3 Moderate

Visibility: 10 mi

5 PM
84°
1%
5 PM
84°

Wind: S @ 14mph

Precip: 1% Chance

Humidity: 56%

Wind Chill: 84°

Heat Index: 88°

UV Index: 1 Low

Visibility: 10 mi

6 PM
83°
1%
6 PM
83°

Wind: SSE @ 14mph

Precip: 1% Chance

Humidity: 58%

Wind Chill: 83°

Heat Index: 86°

UV Index: 0 Low

Visibility: 10 mi

7 PM
81°
1%
7 PM
81°

Wind: SSE @ 13mph

Precip: 1% Chance

Humidity: 65%

Wind Chill: 81°

Heat Index: 85°

UV Index: 0 Low

Visibility: 10 mi

8 PM
79°
3%
8 PM
79°

Wind: SSE @ 13mph

Precip: 3% Chance

Humidity: 72%

Wind Chill: 79°

Heat Index: 83°

UV Index: 0 Low

Visibility: 10 mi

9 PM
78°
4%
9 PM
78°

Wind: SSE @ 12mph

Precip: 4% Chance

Humidity: 74%

Wind Chill: 78°

Heat Index: 82°

UV Index: 0 Low

Visibility: 10 mi

10 PM
78°
12%
10 PM
78°

Wind: S @ 14mph

Precip: 12% Chance

Humidity: 76%

Wind Chill: 78°

Heat Index: 82°

UV Index: 0 Low

Visibility: 10 mi

11 PM
77°
14%
11 PM
77°

Wind: S @ 12mph

Precip: 14% Chance

Humidity: 79%

Wind Chill: 77°

Heat Index: 81°

UV Index: 0 Low

Visibility: 9 mi

12 AM
76°
24%
12 AM
76°

Wind: S @ 10mph

Precip: 24% Chance

Humidity: 79%

Wind Chill: 76°

Heat Index: 80°

UV Index: 0 Low

Visibility: 9 mi