Boulder, CO

Hourly

2 PM

91° 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 9% Intermittent clouds

alerts Air Quality Alert 4:10 PM Sunday - 4:00 PM Monday

• RealFeel Shade™: 89°
• Heat Index: 87°
• Wind: NNE 6 mph
• Air Quality: Poor
• Max UV Index: 7.9 (Very High)
• Wind Gusts: 9 mph
• Humidity: 16%
• Indoor Humidity: 16% (Slightly Dry)
• Dew Point: 39° F
• AccuLumen Brightness Index™: 7 (Bright)
• Cloud Cover: 63%
• Visibility: 10 mi
• Cloud Ceiling: 18200 ft

3 PM

92° 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 9% Intermittent clouds

alerts Air Quality Alert 4:10 PM Sunday - 4:00 PM Monday

• RealFeel Shade™: 90°
• Heat Index: 88°
• Wind: NE 7 mph
• Air Quality: Poor
• Max UV Index: 7.2 (High)
• Wind Gusts: 10 mph
• Humidity: 14%
• Indoor Humidity: 14% (Slightly Dry)
• Dew Point: 37° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 52%
• Visibility: 10 mi
• Cloud Ceiling: 20000 ft

4 PM

93° RealFeel® 96° 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 13% Partly sunny

• RealFeel Shade™: 90°
• Heat Index: 89°
• Wind: ENE 7 mph
• Air Quality: Poor
• Max UV Index: 5.3 (Moderate)
• Wind Gusts: 12 mph
• Humidity: 13%
• Indoor Humidity: 13% (Slightly Dry)
• Dew Point: 35° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 48%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

5 PM

92° 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 51% Partly sunny w/ t-storms

• RealFeel Shade™: 86°
• Heat Index: 87°
• Wind: E 8 mph
• Air Quality: Poor
• Max UV Index: 3.7 (Moderate)
• Wind Gusts: 12 mph
• Humidity: 16%
• Indoor Humidity: 16% (Slightly Dry)
• Dew Point: 40° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 45%
• Rain: 0.04 in
• Visibility: 6 mi
• Cloud Ceiling: 30000 ft

6 PM

90° 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 47% Partly sunny

• RealFeel Shade™: 88°
• Heat Index: 86°
• Wind: E 8 mph
• Air Quality: Poor
• Max UV Index: 2.3 (Low)
• Wind Gusts: 12 mph
• Humidity: 17%
• Indoor Humidity: 17% (Slightly Dry)
• Dew Point: 40° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

89° 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 29% Partly sunny

• RealFeel Shade™: 86°
• Heat Index: 85°
• Wind: ESE 8 mph
• Air Quality: Poor
• Max UV Index: 1.3 (Low)
• Wind Gusts: 9 mph
• Humidity: 18%
• Indoor Humidity: 18% (Ideal Humidity)
• Dew Point: 41° F
• AccuLumen Brightness Index™: 7 (Bright)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

85° 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 0% Mostly cloudy

• RealFeel Shade™: 83°
• Heat Index: 83°
• Wind: ENE 7 mph
• Air Quality: Poor
• Max UV Index: 0.3 (Low)
• Wind Gusts: 8 mph
• Humidity: 23%
• Indoor Humidity: 23% (Ideal Humidity)
• Dew Point: 43° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 28300 ft

9 PM

82° RealFeel® 79° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Intermittent clouds

• Heat Index: 80°
• Wind: NNW 7 mph
• Air Quality: Poor
• Wind Gusts: 8 mph
• Humidity: 27%
• Indoor Humidity: 27% (Ideal Humidity)
• Dew Point: 45° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 65%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

78° RealFeel® 75° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Intermittent clouds

• Wind: WNW 7 mph
• Air Quality: Poor
• Wind Gusts: 8 mph
• Humidity: 31%
• Indoor Humidity: 31% (Ideal Humidity)
• Dew Point: 46° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 50%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

74° RealFeel® 72° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Partly cloudy

• Wind: W 7 mph
• Air Quality: Poor
• Wind Gusts: 8 mph
• Humidity: 36%
• Indoor Humidity: 36% (Ideal Humidity)
• Dew Point: 46° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 36%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft