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Boston, Philly hit 100, NYC breaks record from 1888 amid heat wave. Get the latest Chevron right
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St. Jacob, IL

87°F
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St. Jacob

Illinois

87°
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St. Jacob, IL Weather
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Today

Hourly

 Daily Radar MinuteCast Monthly Air Quality Health & Activities

8 PM

84°
RealFeel® 93°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 7%
Chevron down
Mostly sunny
alerts

Heat Advisory

9:00 PM Monday - 9:00 PM Thursday

RealFeel Shade™93°

WindWSW 6 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts13 mph

Humidity79%

Indoor Humidity79% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover16%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

83°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 7%
Chevron down
Mostly clear
alerts

Heat Advisory

9:00 PM Monday - 9:00 PM Thursday

WindSSW 6 mph

Air QualityFair

Wind Gusts12 mph

Humidity78%

Indoor Humidity78% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

81°
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
rain drop 7%
Chevron down
Mostly clear
alerts

Heat Advisory

9:00 PM Monday - 9:00 PM Thursday

WindSSE 5 mph

Air QualityFair

Wind Gusts12 mph

Humidity81%

Indoor Humidity81% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

80°
RealFeel® 87°
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
rain drop 7%
Chevron down
Mostly clear
alerts

Heat Advisory

9:00 PM Monday - 9:00 PM Thursday

WindSSE 5 mph

Air QualityFair

Wind Gusts10 mph

Humidity84%

Indoor Humidity84% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

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World North America United States Illinois St. Jacob

Weather Near St. Jacob:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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