Fort Jefferson, FL

Hourly

11 AM

86° 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 0% Mostly sunny

• RealFeel Shade™: 93°
• Wind: SSE 9 mph
• Air Quality: Fair
• Max UV Index: 8 (Very High)
• Wind Gusts: 14 mph
• Humidity: 69%
• Indoor Humidity: 69% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 19%
• Visibility: 10 mi
• Cloud Ceiling: 33000 ft

12 PM

87° 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 0% Mostly sunny

• RealFeel Shade™: 93°
• Wind: SSE 9 mph
• Air Quality: Fair
• Max UV Index: 11 (Extreme)
• Wind Gusts: 14 mph
• Humidity: 68%
• Indoor Humidity: 68% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 17%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

1 PM

89° RealFeel® 101° Very Hot RealFeel Guide Very Hot 101° to 107° Caution advised. 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 sunny

• RealFeel Shade™: 95°
• Wind: SSE 9 mph
• Air Quality: Fair
• Max UV Index: 13 (Extreme)
• Wind Gusts: 13 mph
• Humidity: 62%
• Indoor Humidity: 62% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 17%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

2 PM

87° 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 0% Mostly sunny

• RealFeel Shade™: 94°
• Wind: SSE 8 mph
• Air Quality: Fair
• Max UV Index: 11 (Extreme)
• Wind Gusts: 10 mph
• Humidity: 66%
• Indoor Humidity: 66% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

3 PM

87° 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 0% Mostly sunny

• RealFeel Shade™: 94°
• Wind: SSE 8 mph
• Air Quality: Fair
• Max UV Index: 8 (Very High)
• Wind Gusts: 10 mph
• Humidity: 66%
• Indoor Humidity: 66% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

4 PM

87° 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 0% Mostly sunny

• RealFeel Shade™: 94°
• Wind: SE 7 mph
• Air Quality: Fair
• Max UV Index: 5 (Moderate)
• Wind Gusts: 9 mph
• Humidity: 67%
• Indoor Humidity: 67% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

5 PM

87° RealFeel® 97° 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 sunny

• RealFeel Shade™: 93°
• Wind: SE 6 mph
• Air Quality: Fair
• Max UV Index: 3 (Moderate)
• Wind Gusts: 9 mph
• Humidity: 67%
• Indoor Humidity: 67% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

6 PM

86° 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 0% Mostly sunny

• RealFeel Shade™: 93°
• Wind: SE 6 mph
• Air Quality: Fair
• Max UV Index: 2 (Low)
• Wind Gusts: 8 mph
• Humidity: 68%
• Indoor Humidity: 68% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

86° 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 0% Mostly sunny

• RealFeel Shade™: 94°
• Wind: SE 6 mph
• Air Quality: Fair
• Max UV Index: 1 (Low)
• Wind Gusts: 8 mph
• Humidity: 68%
• Indoor Humidity: 68% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 4 (Dull)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

85° 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 0% Intermittent clouds

• RealFeel Shade™: 93°
• Wind: N 5 mph
• Air Quality: Fair
• Max UV Index: 0 (Low)
• Wind Gusts: 7 mph
• Humidity: 70%
• Indoor Humidity: 70% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

83° 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% Intermittent clouds

• Wind: NNW 5 mph
• Air Quality: Fair
• Wind Gusts: 8 mph
• Humidity: 77%
• Indoor Humidity: 77% (Extremely Humid)
• Dew Point: 75° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 69%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

82° 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% Intermittent clouds

• Wind: NW 4 mph
• Air Quality: Fair
• Wind Gusts: 8 mph
• Humidity: 78%
• Indoor Humidity: 78% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 65%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

81° 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% Intermittent clouds

• Wind: WSW 4 mph
• Air Quality: Fair
• Wind Gusts: 8 mph
• Humidity: 79%
• Indoor Humidity: 79% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 62%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft