St. Marys, Ontario

Hourly

1 PM

83° 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 0% Intermittent clouds

• RealFeel Shade™: 81°
• Heat Index: 84°
• Wind: WSW 7 mph
• Air Quality: Fair
• Max UV Index: 8.4 (Very High)
• Wind Gusts: 13 mph
• Humidity: 48%
• Indoor Humidity: 48% (Slightly Humid)
• Dew Point: 62° F
• AccuLumen Brightness Index™: 7 (Bright)
• Cloud Cover: 63%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

2 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 0% Mostly cloudy

• RealFeel Shade™: 84°
• Heat Index: 86°
• Wind: WSW 7 mph
• Air Quality: Fair
• Max UV Index: 5.0 (Moderate)
• Wind Gusts: 14 mph
• Humidity: 52%
• Indoor Humidity: 52% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 3 (Dull)
• Cloud Cover: 88%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

3 PM

86° 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 0% Cloudy

• RealFeel Shade™: 85°
• Heat Index: 87°
• Wind: WSW 7 mph
• Air Quality: Fair
• Max UV Index: 3.7 (Moderate)
• Wind Gusts: 15 mph
• Humidity: 50%
• Indoor Humidity: 50% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 2 (Dark)
• Cloud Cover: 90%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

4 PM

85° 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 0% Cloudy

• RealFeel Shade™: 84°
• Heat Index: 86°
• Wind: W 8 mph
• Air Quality: Fair
• Max UV Index: 2.5 (Low)
• Wind Gusts: 16 mph
• Humidity: 50%
• Indoor Humidity: 50% (Humid)
• Dew Point: 64° F
• AccuLumen Brightness Index™: 2 (Dark)
• Cloud Cover: 93%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

5 PM

83° 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 0% Cloudy

• RealFeel Shade™: 82°
• Heat Index: 85°
• Wind: W 8 mph
• Air Quality: Fair
• Max UV Index: 1.6 (Low)
• Wind Gusts: 17 mph
• Humidity: 52%
• Indoor Humidity: 52% (Humid)
• Dew Point: 64° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 95%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

6 PM

82° 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 0% Cloudy

• RealFeel Shade™: 81°
• Heat Index: 84°
• Wind: WSW 7 mph
• Air Quality: Fair
• Max UV Index: 1.0 (Low)
• Wind Gusts: 14 mph
• Humidity: 55%
• Indoor Humidity: 55% (Humid)
• Dew Point: 64° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 96%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

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

• RealFeel Shade™: 81°
• Heat Index: 82°
• Wind: WSW 6 mph
• Air Quality: Fair
• Max UV Index: 0.5 (Low)
• Wind Gusts: 12 mph
• Humidity: 60%
• Indoor Humidity: 60% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 98%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

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

• RealFeel Shade™: 81°
• Heat Index: 82°
• Wind: SW 6 mph
• Air Quality: Fair
• Max UV Index: 0.2 (Low)
• Wind Gusts: 9 mph
• Humidity: 65%
• Indoor Humidity: 65% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

79° RealFeel® 80° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Partly cloudy

• Wind: SSW 6 mph
• Air Quality: Fair
• Wind Gusts: 8 mph
• Humidity: 70%
• Indoor Humidity: 70% (Very Humid)
• Dew Point: 68° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

76° RealFeel® 77° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Partly cloudy

• Wind: SSW 6 mph
• Air Quality: Fair
• Wind Gusts: 9 mph
• Humidity: 75%
• Indoor Humidity: 75% (Very Humid)
• Dew Point: 68° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 45%
• 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 1% Partly cloudy

• Wind: S 6 mph
• Air Quality: Fair
• Wind Gusts: 10 mph
• Humidity: 80%
• Indoor Humidity: 80% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft