View hourly forecasts 10-days ahead
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10 PM
69°
RealFeel®
66°
Pleasant
16%
Cloudy
WindWSW 7 mph
Air QualityFair
Wind Gusts8 mph
Humidity56%
Indoor Humidity56% (Ideal Humidity)
Dew Point52° F
AccuLumen Brightness Index™0 (Dark)
Cloud Cover90%
Visibility10 mi
Cloud Ceiling14700 ft
11 PM
65°
RealFeel®
60°
Cool
51%
Mostly cloudy w/ t-storms
WindWSW 8 mph
Air QualityFair
Wind Gusts9 mph
Humidity69%
Indoor Humidity62% (Ideal Humidity)
Dew Point54° F
AccuLumen Brightness Index™0 (Dark)
Cloud Cover72%
Rain0.05 in
Visibility6 mi
Cloud Ceiling4000 ft
Hourly Weather Forecast for O'Fallon
AccuWeather's hourly forecast for O'Fallon provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 69° with a RealFeel® of 66°, cloudy with a 16% 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.
