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Cornwall, Ontario

91°F
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91°
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Cornwall, Ontario Weather
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 Daily Radar MinuteCast Monthly Air Quality Health & Activities

4 PM

91°
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 51%
Chevron down
Partly sunny w/ t-storms
alerts

Heat Warning

10:28 AM Saturday - 6:00 AM Friday

RealFeel Shade™94°

WindNE 7 mph

Air QualityPoor

Max UV Index5 (Moderate)

Wind Gusts10 mph

Humidity56%

Indoor Humidity56% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover37%

Rain0.20 in

Visibility4 mi

Cloud Ceiling33400 ft

5 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 15%
Chevron down
Partly sunny
alerts

Heat Warning

10:28 AM Saturday - 6:00 AM Friday

RealFeel Shade™95°

WindNE 6 mph

Air QualityPoor

Max UV Index3 (Moderate)

Wind Gusts15 mph

Humidity59%

Indoor Humidity59% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

87°
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 11%
Chevron down
Partly sunny
alerts

Heat Warning

10:28 AM Saturday - 6:00 AM Friday

RealFeel Shade™90°

WindENE 7 mph

Air QualityPoor

Max UV Index2 (Low)

Wind Gusts12 mph

Humidity57%

Indoor Humidity57% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

7 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 11%
Chevron down
Partly sunny
alerts

Heat Warning

10:28 AM Saturday - 6:00 AM Friday

RealFeel Shade™89°

WindESE 7 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts9 mph

Humidity64%

Indoor Humidity64% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

82°
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 10%
Chevron down
Mostly sunny
alerts

Heat Warning

10:28 AM Saturday - 6:00 AM Friday

RealFeel Shade™87°

WindS 6 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts10 mph

Humidity72%

Indoor Humidity72% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

79°
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 10%
Chevron down
Mostly clear
alerts

Heat Warning

10:28 AM Saturday - 6:00 AM Friday

WindSSE 7 mph

Air QualityFair

Wind Gusts10 mph

Humidity79%

Indoor Humidity79% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

76°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 10%
Chevron down
Mostly clear
alerts

Heat Warning

10:28 AM Saturday - 6:00 AM Friday

WindSSE 6 mph

Air QualityFair

Wind Gusts12 mph

Humidity84%

Indoor Humidity84% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

74°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 10%
Chevron down
Mostly clear
alerts

Heat Warning

10:28 AM Saturday - 6:00 AM Friday

WindSSE 6 mph

Air QualityFair

Wind Gusts13 mph

Humidity88%

Indoor Humidity88% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

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Weather Near Cornwall:

  • Laval, Quebec
  • Montreal, Quebec
  • Ottawa, Ontario
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