Port St. John, FL

Hourly

7 AM

76° 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 5% Sunny

• RealFeel Shade™: 82°
• Wind: SSW 5 mph
• Air Quality: Fair
• Max UV Index: 1 (Low)
• Wind Gusts: 9 mph
• Humidity: 86%
• Indoor Humidity: 86% (Extremely Humid)
• Dew Point: 72° F
• AccuLumen Brightness Index™: 4 (Dull)
• Cloud Cover: 8%
• Visibility: 10 mi
• Cloud Ceiling: 33000 ft

8 AM

78° 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 0% Partly sunny

• RealFeel Shade™: 84°
• Wind: SSE 7 mph
• Air Quality: Fair
• Max UV Index: 2 (Low)
• Wind Gusts: 8 mph
• Humidity: 83%
• Indoor Humidity: 83% (Extremely Humid)
• Dew Point: 73° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 31%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 AM

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 0% Mostly sunny

• RealFeel Shade™: 88°
• Wind: S 7 mph
• Air Quality: Fair
• Max UV Index: 3 (Moderate)
• Wind Gusts: 8 mph
• Humidity: 74%
• Indoor Humidity: 74% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 21%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 AM

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: S 7 mph
• Air Quality: Fair
• Max UV Index: 5 (Moderate)
• Wind Gusts: 8 mph
• Humidity: 66%
• Indoor Humidity: 66% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 12%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 AM

91° RealFeel® 102° 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% Sunny

• RealFeel Shade™: 96°
• Wind: SSW 7 mph
• Air Quality: Fair
• Max UV Index: 8 (Very High)
• Wind Gusts: 9 mph
• Humidity: 58%
• Indoor Humidity: 58% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 10 (Very Bright)
• Cloud Cover: 3%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

12 PM

93° RealFeel® 104° 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™: 98°
• Wind: SSW 8 mph
• Air Quality: Fair
• Max UV Index: 11 (Extreme)
• Wind Gusts: 9 mph
• Humidity: 52%
• Indoor Humidity: 52% (Extremely Humid)
• Dew Point: 73° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

1 PM

95° RealFeel® 105° 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 1% Mostly sunny

• RealFeel Shade™: 99°
• Wind: SSW 8 mph
• Air Quality: Fair
• Max UV Index: 12 (Extreme)
• Wind Gusts: 10 mph
• Humidity: 47%
• Indoor Humidity: 47% (Extremely Humid)
• Dew Point: 72° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 19%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

2 PM

97° RealFeel® 107° 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 7% Mostly sunny

• RealFeel Shade™: 100°
• Wind: SSW 8 mph
• Air Quality: Fair
• Max UV Index: 11 (Extreme)
• Wind Gusts: 13 mph
• Humidity: 42%
• Indoor Humidity: 42% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 27%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

3 PM

96° RealFeel® 105° 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 7% Mostly sunny

• RealFeel Shade™: 99°
• Wind: S 8 mph
• Air Quality: Fair
• Max UV Index: 8 (Very High)
• Wind Gusts: 13 mph
• Humidity: 43%
• Indoor Humidity: 43% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 27%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

4 PM

95° RealFeel® 102° 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 7% Intermittent clouds

• RealFeel Shade™: 98°
• Wind: SSE 9 mph
• Air Quality: Fair
• Max UV Index: 4 (Moderate)
• Wind Gusts: 14 mph
• Humidity: 45%
• Indoor Humidity: 45% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 6 (Medium)
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

5 PM

94° RealFeel® 100° 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™: 97°
• Wind: SE 9 mph
• Air Quality: Fair
• Max UV Index: 3 (Moderate)
• Wind Gusts: 15 mph
• Humidity: 47%
• Indoor Humidity: 47% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 26%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

6 PM

92° 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 7% Mostly sunny

• RealFeel Shade™: 95°
• Wind: SE 9 mph
• Air Quality: Fair
• Max UV Index: 2 (Low)
• Wind Gusts: 15 mph
• Humidity: 52%
• Indoor Humidity: 52% (Extremely Humid)
• Dew Point: 72° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 23%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

88° 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 5% Mostly sunny

• RealFeel Shade™: 94°
• Wind: SE 9 mph
• Air Quality: Fair
• Max UV Index: 1 (Low)
• Wind Gusts: 15 mph
• Humidity: 60%
• Indoor Humidity: 60% (Extremely Humid)
• Dew Point: 73° F
• AccuLumen Brightness Index™: 4 (Dull)
• Cloud Cover: 20%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

86° 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 0% Mostly sunny

• RealFeel Shade™: 92°
• Wind: SE 8 mph
• Air Quality: Fair
• Max UV Index: 0 (Low)
• Wind Gusts: 17 mph
• Humidity: 69%
• Indoor Humidity: 69% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 17%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

83° 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% Mostly clear

• Wind: SE 7 mph
• Air Quality: Fair
• Wind Gusts: 13 mph
• Humidity: 75%
• Indoor Humidity: 75% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 14%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

80° 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% Mostly clear

• Wind: SSE 6 mph
• Air Quality: Fair
• Wind Gusts: 8 mph
• Humidity: 80%
• Indoor Humidity: 80% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

78° 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% Mostly clear

• Wind: SSE 6 mph
• Air Quality: Fair
• Wind Gusts: 6 mph
• Humidity: 84%
• Indoor Humidity: 84% (Extremely Humid)
• Dew Point: 73° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft