O'Fallon, MO

Hourly

2 PM

88° RealFeel® 89° Very Warm RealFeel Guide Very Warm 82° to 89° Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine. LEARN MORE 0% Partly sunny

• RealFeel Shade™: 84°
• Wind: WNW 12 mph
• Air Quality: Poor
• Max UV Index: 4.9 (Moderate)
• Wind Gusts: 17 mph
• Humidity: 35%
• Indoor Humidity: 35% (Slightly Humid)
• Dew Point: 57° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 37%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

3 PM

85° RealFeel® 83° Very Warm RealFeel Guide Very Warm 82° to 89° Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine. LEARN MORE 0% Intermittent clouds

• RealFeel Shade™: 81°
• Wind: NNW 16 mph
• Air Quality: Poor
• Max UV Index: 3.0 (Moderate)
• Wind Gusts: 27 mph
• Humidity: 38%
• Indoor Humidity: 38% (Slightly Humid)
• Dew Point: 56° F
• AccuLumen Brightness Index™: 6 (Medium)
• Cloud Cover: 65%
• Visibility: 10 mi
• Cloud Ceiling: 17900 ft

4 PM

80° RealFeel® 77° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Cloudy

• RealFeel Shade™: 76°
• Wind: NNW 20 mph
• Air Quality: Fair
• Max UV Index: 1.3 (Low)
• Wind Gusts: 31 mph
• Humidity: 42%
• Indoor Humidity: 42% (Slightly Humid)
• Dew Point: 56° F
• AccuLumen Brightness Index™: 2 (Dark)
• Cloud Cover: 90%
• Visibility: 10 mi
• Cloud Ceiling: 14700 ft

5 PM

76° RealFeel® 72° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Cloudy

• RealFeel Shade™: 72°
• Wind: N 20 mph
• Air Quality: Fair
• Max UV Index: 0.7 (Low)
• Wind Gusts: 30 mph
• Humidity: 44%
• Indoor Humidity: 44% (Ideal Humidity)
• Dew Point: 53° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 100%
• Visibility: 10 mi
• Cloud Ceiling: 14700 ft

6 PM

66° RealFeel® 62° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 0% Cloudy

• RealFeel Shade™: 62°
• Wind: N 20 mph
• Air Quality: Fair
• Max UV Index: 0.4 (Low)
• Wind Gusts: 29 mph
• Humidity: 52%
• Indoor Humidity: 48% (Ideal Humidity)
• Dew Point: 48° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 96%
• Visibility: 10 mi
• Cloud Ceiling: 14700 ft

7 PM

60° RealFeel® 52° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 0% Mostly cloudy

• RealFeel Shade™: 52°
• Wind: N 20 mph
• Air Quality: Fair
• Max UV Index: 0.0 (Low)
• Wind Gusts: 31 mph
• Humidity: 54%
• Indoor Humidity: 40% (Ideal Humidity)
• Dew Point: 43° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 80%
• Visibility: 10 mi
• Cloud Ceiling: 14700 ft

8 PM

57° RealFeel® 49° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 3% Partly cloudy

• Wind: N 21 mph
• Air Quality: Fair
• Wind Gusts: 32 mph
• Humidity: 53%
• Indoor Humidity: 36% (Slightly Dry)
• Dew Point: 40° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

54° RealFeel® 46° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 3% Mostly clear

• Wind: N 18 mph
• Air Quality: Fair
• Wind Gusts: 30 mph
• Humidity: 55%
• Indoor Humidity: 34% (Slightly Dry)
• Dew Point: 39° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 27%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

52° RealFeel® 42° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 3% Mostly clear

• Wind: N 17 mph
• Air Quality: Fair
• Wind Gusts: 25 mph
• Humidity: 58%
• Indoor Humidity: 32% (Slightly Dry)
• Dew Point: 37° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 26%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

49° RealFeel® 40° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 3% Mostly clear

• Wind: N 16 mph
• Air Quality: Fair
• Wind Gusts: 24 mph
• Humidity: 60%
• Indoor Humidity: 30% (Slightly Dry)
• Dew Point: 36° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 26%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft