View hourly forecasts 10-days ahead
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9 PM
73°
RealFeel®
72°
Pleasant
0%
Mostly clear
WindSSE 5 mph
Air QualityFair
Wind Gusts5 mph
Humidity67%
Indoor Humidity67% (Slightly Humid)
Dew Point62° F
AccuLumen Brightness Index™0 (Dark)
Cloud Cover26%
Visibility10 mi
Cloud Ceiling33000 ft
10 PM
71°
RealFeel®
71°
Pleasant
0%
Mostly clear
WindSSE 4 mph
Air QualityFair
Wind Gusts7 mph
Humidity76%
Indoor Humidity76% (Humid)
Dew Point63° F
AccuLumen Brightness Index™0 (Dark)
Cloud Cover25%
Visibility10 mi
Cloud Ceiling30000 ft
11 PM
70°
RealFeel®
69°
Pleasant
0%
Mostly clear
WindESE 4 mph
Air QualityFair
Wind Gusts5 mph
Humidity79%
Indoor Humidity79% (Humid)
Dew Point63° F
AccuLumen Brightness Index™0 (Dark)
Cloud Cover25%
Visibility10 mi
Cloud Ceiling30000 ft
Hourly Weather Forecast for Alton
AccuWeather's hourly forecast for Alton provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 73° with a RealFeel® of 72°, mostly clear with a 0% 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.
