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Over 250 million face dangerous heat dome into 4th of July weekend. Click for details. Chevron right
Where will there be storms into 4th of July weekend? Click for the forecast. Chevron right

DeKalb, IL

91°F
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DeKalb

Illinois

91°
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DeKalb, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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5 PM

91°
RealFeel® 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
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rain drop 0%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

1:51 AM Tuesday - 12:00 AM Friday

RealFeel Shade™97°

Heat Index105°

WindSSW 16 mph

Air QualityPoor

Max UV Index3.5 (Moderate)

Wind Gusts30 mph

Humidity63%

Indoor Humidity63% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover22%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

90°
RealFeel® 99°
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 0%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

1:51 AM Tuesday - 12:00 AM Friday

RealFeel Shade™96°

Heat Index103°

WindSSW 15 mph

Air QualityPoor

Max UV Index2.2 (Low)

Wind Gusts30 mph

Humidity67%

Indoor Humidity67% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover16%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

88°
RealFeel® 97°
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 0%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

1:51 AM Tuesday - 12:00 AM Friday

RealFeel Shade™95°

Heat Index100°

WindSSW 15 mph

Air QualityPoor

Max UV Index1.3 (Low)

Wind Gusts29 mph

Humidity71%

Indoor Humidity71% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

85°
RealFeel® 92°
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 0%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

1:51 AM Tuesday - 12:00 AM Friday

RealFeel Shade™92°

Heat Index94°

WindSW 13 mph

Air QualityPoor

Max UV Index0.4 (Low)

Wind Gusts27 mph

Humidity77%

Indoor Humidity77% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

82°
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 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

1:51 AM Tuesday - 12:00 AM Friday

Heat Index88°

WindSW 9 mph

Air QualityPoor

Wind Gusts22 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 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 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

1:51 AM Tuesday - 12:00 AM Friday

Heat Index84°

WindSW 8 mph

Air QualityPoor

Wind Gusts15 mph

Humidity86%

Indoor Humidity86% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

78°
RealFeel® 85°
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 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

1:51 AM Tuesday - 12:00 AM Friday

Heat Index80°

WindSW 8 mph

Air QualityPoor

Wind Gusts14 mph

Humidity88%

Indoor Humidity88% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for DeKalb

AccuWeather's hourly forecast for DeKalb provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 91° with a RealFeel® of 101°, mostly sunny with a 0% 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.

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  • Joliet, IL
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