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Flash flood risk to focus on parts of central US. Get the forecast Chevron right

Hornsby, IL

83°F
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Hornsby

Illinois

83°
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Hornsby, IL Weather
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1 PM

85°
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 65%
Chevron down
Thunderstorms

RealFeel Shade™89°

WindS 7 mph

Air QualityFair

Max UV Index2 (Low)

Wind Gusts8 mph

Humidity74%

Indoor Humidity74% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Rain0.32 in

Visibility4 mi

Cloud Ceiling2000 ft

2 PM

86°
RealFeel® 100°
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 49%
Chevron down
Mostly cloudy

RealFeel Shade™92°

WindS 7 mph

Air QualityFair

Max UV Index7 (High)

Wind Gusts8 mph

Humidity65%

Indoor Humidity65% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover79%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

88°
RealFeel® 95°
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 66%
Chevron down
Mostly cloudy w/ t-storms

RealFeel Shade™92°

WindSSW 7 mph

Air QualityFair

Max UV Index2 (Low)

Wind Gusts9 mph

Humidity69%

Indoor Humidity69% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Rain0.33 in

Visibility4 mi

Cloud Ceiling2000 ft

4 PM

89°
RealFeel® 100°
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 49%
Chevron down
Intermittent clouds

RealFeel Shade™94°

WindSSW 7 mph

Air QualityFair

Max UV Index4 (Moderate)

Wind Gusts10 mph

Humidity61%

Indoor Humidity61% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

88°
RealFeel® 98°
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 49%
Chevron down
Intermittent clouds
alerts

Flood Watch

5:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™94°

WindSSW 7 mph

Air QualityFair

Max UV Index3 (Moderate)

Wind Gusts10 mph

Humidity62%

Indoor Humidity62% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling26500 ft

6 PM

85°
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 49%
Chevron down
Intermittent clouds
alerts

Flood Watch

5:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™91°

WindS 6 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts9 mph

Humidity69%

Indoor Humidity69% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover74%

Visibility10 mi

Cloud Ceiling22900 ft

7 PM

82°
RealFeel® 90°
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 56%
Chevron down
Thunderstorms
alerts

Flood Watch

5:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™90°

WindS 5 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts8 mph

Humidity89%

Indoor Humidity89% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover87%

Rain0.33 in

Visibility4 mi

Cloud Ceiling2000 ft

8 PM

81°
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 49%
Chevron down
Partly sunny
alerts

Flood Watch

5:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™91°

WindNE 5 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts13 mph

Humidity82%

Indoor Humidity82% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

80°
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
rain drop 71%
Chevron down
Partly cloudy w/ t-storms
alerts

Flood Watch

5:00 PM Sunday - 1:00 PM Monday

WindNE 5 mph

Air QualityFair

Wind Gusts13 mph

Humidity86%

Indoor Humidity86% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Rain0.65 in

Visibility3 mi

Cloud Ceiling30000 ft

10 PM

78°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 71%
Chevron down
Partly cloudy w/ t-storms
alerts

Flood Watch

5:00 PM Sunday - 1:00 PM Monday

WindNE 5 mph

Air QualityFair

Wind Gusts13 mph

Humidity90%

Indoor Humidity90% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Rain0.65 in

Visibility3 mi

Cloud Ceiling30000 ft

11 PM

76°
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
rain drop 40%
Chevron down
Partly cloudy
alerts

Flood Watch

5:00 PM Sunday - 1:00 PM Monday

WindENE 5 mph

Air QualityFair

Wind Gusts12 mph

Humidity93%

Indoor Humidity93% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

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