Waterdown, Ontario

Hourly

12 PM

81° 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 7% Partly sunny

• RealFeel Shade™: 82°
• Heat Index: 84°
• Wind: SW 5 mph
• Air Quality: Fair
• Max UV Index: 9.1 (Very High)
• Wind Gusts: 12 mph
• Humidity: 61%
• Indoor Humidity: 61% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 31%
• Visibility: 10 mi
• Cloud Ceiling: 33400 ft

1 PM

83° 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 7% Partly sunny

• RealFeel Shade™: 82°
• Heat Index: 85°
• Wind: WSW 6 mph
• Air Quality: Fair
• Max UV Index: 9.9 (Very High)
• Wind Gusts: 13 mph
• Humidity: 55%
• Indoor Humidity: 55% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

2 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 7% Mostly sunny

• RealFeel Shade™: 84°
• Heat Index: 86°
• Wind: WSW 6 mph
• Air Quality: Fair
• Max UV Index: 9.1 (Very High)
• Wind Gusts: 15 mph
• Humidity: 54%
• Indoor Humidity: 54% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

3 PM

85° 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 7% Mostly sunny

• RealFeel Shade™: 85°
• Heat Index: 87°
• Wind: W 6 mph
• Air Quality: Fair
• Max UV Index: 7.0 (High)
• Wind Gusts: 15 mph
• Humidity: 51%
• Indoor Humidity: 51% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

4 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 7% Mostly sunny

• RealFeel Shade™: 84°
• Heat Index: 86°
• Wind: W 7 mph
• Air Quality: Fair
• Max UV Index: 4.8 (Moderate)
• Wind Gusts: 16 mph
• Humidity: 52%
• Indoor Humidity: 52% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

5 PM

84° 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. LEARN MORE 7% Sunny

• RealFeel Shade™: 83°
• Heat Index: 86°
• Wind: W 7 mph
• Air Quality: Fair
• Max UV Index: 3.4 (Moderate)
• Wind Gusts: 17 mph
• Humidity: 53%
• Indoor Humidity: 53% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 10 (Very Bright)
• Cloud Cover: 4%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

6 PM

83° 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 7% Sunny

• RealFeel Shade™: 82°
• Heat Index: 85°
• Wind: WNW 8 mph
• Air Quality: Fair
• Max UV Index: 2.2 (Low)
• Wind Gusts: 16 mph
• Humidity: 55%
• Indoor Humidity: 55% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 10 (Very Bright)
• Cloud Cover: 3%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

81° 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 5% Sunny

• RealFeel Shade™: 81°
• Heat Index: 84°
• Wind: WNW 8 mph
• Air Quality: Fair
• Max UV Index: 1.3 (Low)
• Wind Gusts: 16 mph
• Humidity: 61%
• Indoor Humidity: 61% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 1%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

80° RealFeel® 80° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Sunny

• RealFeel Shade™: 80°
• Heat Index: 82°
• Wind: WSW 8 mph
• Air Quality: Fair
• Max UV Index: 0.4 (Low)
• Wind Gusts: 15 mph
• Humidity: 63%
• Indoor Humidity: 63% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 3 (Dull)
• Cloud Cover: 0%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

79° RealFeel® 79° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 79°
• Wind: WSW 8 mph
• Air Quality: Fair
• Max UV Index: 0.0 (Low)
• Wind Gusts: 15 mph
• Humidity: 68%
• Indoor Humidity: 68% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

76° RealFeel® 76° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly clear

• Wind: SW 8 mph
• Air Quality: Fair
• Wind Gusts: 15 mph
• Humidity: 76%
• Indoor Humidity: 76% (Very Humid)
• Dew Point: 68° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

73° RealFeel® 74° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly clear

• Wind: SW 7 mph
• Air Quality: Fair
• Wind Gusts: 16 mph
• Humidity: 82%
• Indoor Humidity: 82% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft