Stony Brook, NY

Hourly

1 PM

82° 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 16% Intermittent clouds

• RealFeel Shade™: 84°
• Heat Index: 85°
• Wind: SSW 8 mph
• Air Quality: Fair
• Max UV Index: 8.4 (Very High)
• Wind Gusts: 12 mph
• Humidity: 67%
• Indoor Humidity: 67% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 7 (Bright)
• Cloud Cover: 62%
• Visibility: 10 mi
• Cloud Ceiling: 26800 ft

2 PM

83° RealFeel® 92° 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% Intermittent clouds

• RealFeel Shade™: 85°
• Heat Index: 87°
• Wind: S 9 mph
• Air Quality: Fair
• Max UV Index: 6.3 (High)
• Wind Gusts: 14 mph
• Humidity: 64%
• Indoor Humidity: 64% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 6 (Medium)
• Cloud Cover: 65%
• Visibility: 10 mi
• Cloud Ceiling: 19200 ft

3 PM

82° 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 7% Intermittent clouds

• RealFeel Shade™: 83°
• Heat Index: 86°
• Wind: S 9 mph
• Air Quality: Fair
• Max UV Index: 4.6 (Moderate)
• Wind Gusts: 15 mph
• Humidity: 66%
• Indoor Humidity: 66% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 6 (Medium)
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 21000 ft

4 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 7% Intermittent clouds

• RealFeel Shade™: 82°
• Heat Index: 85°
• Wind: S 10 mph
• Air Quality: Fair
• Max UV Index: 3.3 (Moderate)
• Wind Gusts: 15 mph
• Humidity: 67%
• Indoor Humidity: 67% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 6 (Medium)
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 22900 ft

5 PM

80° 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 7% Intermittent clouds

• RealFeel Shade™: 81°
• Heat Index: 84°
• Wind: S 12 mph
• Air Quality: Fair
• Max UV Index: 2.5 (Moderate)
• Wind Gusts: 15 mph
• Humidity: 69%
• Indoor Humidity: 69% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 6 (Medium)
• Cloud Cover: 65%
• Visibility: 10 mi
• Cloud Ceiling: 24800 ft

6 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 7% Intermittent clouds

• RealFeel Shade™: 80°
• Heat Index: 80°
• Wind: S 10 mph
• Air Quality: Fair
• Max UV Index: 1.9 (Low)
• Wind Gusts: 15 mph
• Humidity: 72%
• Indoor Humidity: 72% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 7 (Bright)
• Cloud Cover: 54%
• Visibility: 10 mi
• Cloud Ceiling: 24800 ft

7 PM

77° RealFeel® 80° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 5% Partly sunny

• RealFeel Shade™: 80°
• Wind: S 9 mph
• Air Quality: Fair
• Max UV Index: 1.0 (Low)
• Wind Gusts: 14 mph
• Humidity: 78%
• Indoor Humidity: 78% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 5 (Medium)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

75° RealFeel® 77° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly cloudy

• RealFeel Shade™: 77°
• Wind: S 9 mph
• Air Quality: Fair
• Max UV Index: 0.1 (Low)
• Wind Gusts: 14 mph
• Humidity: 84%
• Indoor Humidity: 84% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

73° RealFeel® 75° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly cloudy

• Wind: S 8 mph
• Air Quality: Fair
• Wind Gusts: 13 mph
• Humidity: 90%
• Indoor Humidity: 90% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

72° RealFeel® 75° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly cloudy

• Wind: S 8 mph
• Air Quality: Fair
• Wind Gusts: 12 mph
• Humidity: 92%
• Indoor Humidity: 92% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 24800 ft

11 PM

73° RealFeel® 75° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly cloudy

• Wind: S 7 mph
• Air Quality: Fair
• Wind Gusts: 9 mph
• Humidity: 91%
• Indoor Humidity: 91% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 24800 ft