View hourly forecasts 10-days ahead
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9 PM
76°
RealFeel®
86°
Very Warm
34%
Mostly cloudy
Wind0 mph
Air QualityFair
Wind Gusts0 mph
Humidity85%
Indoor Humidity85% (Extremely Humid)
Dew Point72° F
AccuLumen Brightness Index™0 (Dark)
Cloud Cover78%
Visibility10 mi
Cloud Ceiling24900 ft
10 PM
72°
RealFeel®
79°
Pleasant
37%
Intermittent clouds
WindENE 1 mph
Air QualityFair
Wind Gusts1 mph
Humidity98%
Indoor Humidity95% (Extremely Humid)
Dew Point72° F
AccuLumen Brightness Index™0 (Dark)
Cloud Cover73%
Visibility10 mi
Cloud Ceiling30000 ft
11 PM
71°
RealFeel®
77°
Pleasant
43%
Mostly cloudy
WindENE 1 mph
Air QualityFair
Wind Gusts2 mph
Humidity99%
Indoor Humidity95% (Very Humid)
Dew Point71° F
AccuLumen Brightness Index™0 (Dark)
Cloud Cover77%
Visibility10 mi
Cloud Ceiling20100 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 76° with a RealFeel® of 86°, mostly cloudy with a 34% 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.
