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St Catharines, Ontario

91°F
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91°
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St Catharines, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

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Today

Hourly

 Daily Radar MinuteCast Monthly Air Quality Health & Activities

6 PM

90°
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.
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rain drop 7%
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Partly sunny
alerts

Heat Warning

5:00 PM Sunday - 6:00 AM Monday

RealFeel Shade™88°

WindSSW 14 mph

Air QualityPoor

Max UV Index2 (Low)

Wind Gusts24 mph

Humidity42%

Indoor Humidity42% (Humid)

Dew Point64° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover49%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

88°
RealFeel® 88°
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.
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rain drop 5%
Chevron down
Partly sunny
alerts

Heat Warning

5:00 PM Sunday - 6:00 AM Monday

RealFeel Shade™87°

WindSSW 12 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts20 mph

Humidity48%

Indoor Humidity48% (Humid)

Dew Point66° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover32%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

86°
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 sunny
alerts

Heat Warning

5:00 PM Sunday - 6:00 AM Monday

RealFeel Shade™87°

WindS 9 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts15 mph

Humidity54%

Indoor Humidity54% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

84°
RealFeel® 84°
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

Heat Warning

5:00 PM Sunday - 6:00 AM Monday

WindS 8 mph

Air QualityFair

Wind Gusts14 mph

Humidity59%

Indoor Humidity59% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

81°
RealFeel® 82°
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

Heat Warning

5:00 PM Sunday - 6:00 AM Monday

WindS 9 mph

Air QualityFair

Wind Gusts14 mph

Humidity64%

Indoor Humidity64% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

79°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
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rain drop 0%
Chevron down
Mostly clear
alerts

Heat Warning

5:00 PM Sunday - 6:00 AM Monday

WindS 9 mph

Air QualityFair

Wind Gusts13 mph

Humidity70%

Indoor Humidity70% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

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Weather Near St Catharines:

  • Brampton, Ontario
  • Mississauga Valley, Ontario
  • Toronto, Ontario
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