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McHenry, IL

74°F
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McHenry, IL Weather
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Today

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 Daily Radar MinuteCast Monthly Air Quality Health & Activities

10 AM

77°
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
Partly sunny
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™79°

WindSSW 7 mph

Air QualityPoor

Max UV Index5 (Moderate)

Wind Gusts9 mph

Humidity75%

Indoor Humidity75% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

81°
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 0%
Chevron down
Partly sunny
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™82°

WindSSW 8 mph

Air QualityPoor

Max UV Index7 (High)

Wind Gusts9 mph

Humidity65%

Indoor Humidity65% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

84°
RealFeel® 94°
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
Partly sunny
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™85°

WindSSW 8 mph

Air QualityPoor

Max UV Index9 (Very High)

Wind Gusts10 mph

Humidity58%

Indoor Humidity58% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover48%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

87°
RealFeel® 96°
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
Intermittent clouds
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™88°

WindSSW 8 mph

Air QualityPoor

Max UV Index8 (Very High)

Wind Gusts12 mph

Humidity53%

Indoor Humidity53% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling22300 ft

2 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
Intermittent clouds
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™89°

WindSSW 8 mph

Air QualityPoor

Max UV Index7 (High)

Wind Gusts13 mph

Humidity50%

Indoor Humidity50% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover67%

Visibility10 mi

Cloud Ceiling24900 ft

3 PM

90°
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 0%
Chevron down
Intermittent clouds
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™91°

WindS 8 mph

Air QualityPoor

Max UV Index7 (High)

Wind Gusts13 mph

Humidity48%

Indoor Humidity48% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover59%

Visibility10 mi

Cloud Ceiling27400 ft

4 PM

89°
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 0%
Chevron down
Partly sunny
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™90°

WindS 8 mph

Air QualityPoor

Max UV Index5 (Moderate)

Wind Gusts14 mph

Humidity50%

Indoor Humidity50% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

88°
RealFeel® 94°
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
Partly sunny
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™90°

WindSSE 7 mph

Air QualityPoor

Max UV Index3 (Moderate)

Wind Gusts13 mph

Humidity51%

Indoor Humidity51% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

87°
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 0%
Chevron down
Partly sunny
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™88°

WindSE 7 mph

Air QualityPoor

Max UV Index2 (Low)

Wind Gusts10 mph

Humidity56%

Indoor Humidity56% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

84°
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
Partly sunny
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™87°

WindSE 6 mph

Air QualityPoor

Max UV Index1 (Low)

Wind Gusts8 mph

Humidity61%

Indoor Humidity61% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

82°
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 1%
Chevron down
Mostly sunny
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

RealFeel Shade™85°

WindSE 6 mph

Air QualityPoor

Max UV Index0 (Low)

Wind Gusts7 mph

Humidity67%

Indoor Humidity67% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover24%

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 1%
Chevron down
Mostly clear
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

WindSSE 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity73%

Indoor Humidity73% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

77°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Mostly clear
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

WindSSE 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity80%

Indoor Humidity80% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

75°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 1%
Chevron down
Mostly clear
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Wednesday

WindS 6 mph

Air QualityPoor

Wind Gusts6 mph

Humidity87%

Indoor Humidity87% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

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Weather Near McHenry:

  • Chicago, IL
  • Joliet, IL
  • Naperville, IL
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