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Alliston, Ontario

88°F
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Alliston

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88°
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Alliston, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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3 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 19%
Chevron down
Mostly sunny
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

RealFeel Shade™92°

Heat Index96°

WindW 10 mph

Air QualityFair

Max UV Index7.0 (High)

Wind Gusts22 mph

Humidity54%

Indoor Humidity54% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

91°
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 24%
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Partly sunny
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

RealFeel Shade™93°

Heat Index97°

WindW 10 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts22 mph

Humidity51%

Indoor Humidity51% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

5 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 43%
Chevron down
Mostly sunny
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

RealFeel Shade™91°

Heat Index95°

WindW 9 mph

Air QualityFair

Max UV Index3.4 (Moderate)

Wind Gusts23 mph

Humidity54%

Indoor Humidity54% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

88°
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 47%
Chevron down
Partly sunny
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

RealFeel Shade™90°

Heat Index93°

WindW 9 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts20 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® 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 51%
Chevron down
Partly sunny w/ t-storms
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

RealFeel Shade™88°

Heat Index93°

WindWNW 7 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts16 mph

Humidity71%

Indoor Humidity71% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Rain0.10 in

Visibility4 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 51%
Chevron down
Partly sunny w/ t-storms
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

RealFeel Shade™85°

Heat Index88°

WindWNW 7 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts13 mph

Humidity72%

Indoor Humidity72% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover26%

Rain0.04 in

Visibility6 mi

Cloud Ceiling30000 ft

9 PM

81°
RealFeel® 86°
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 47%
Chevron down
Mostly sunny
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

RealFeel Shade™86°

Heat Index85°

WindW 6 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts10 mph

Humidity76%

Indoor Humidity76% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover27%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

79°
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 40%
Chevron down
Partly cloudy
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

Heat Index80°

WindW 5 mph

Air QualityFair

Wind Gusts9 mph

Humidity79%

Indoor Humidity79% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover32%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

77°
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 34%
Chevron down
Partly cloudy
alerts

Orange Warning - Heat

5:13 AM Thursday - 12:00 AM Sunday

WindWSW 5 mph

Air QualityFair

Wind Gusts9 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover37%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Alliston

AccuWeather's hourly forecast for Alliston provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 90° with a RealFeel® of 99°, mostly sunny with a 19% 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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Weather Near Alliston:

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