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Diamond Bar, CA

75°F
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Diamond Bar

California

75°
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Diamond Bar, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Hourly

 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

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10 AM

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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™78°

WindSW 5 mph

Air QualityPoor

Max UV Index4.0 (Moderate)

Wind Gusts6 mph

Humidity62%

Indoor Humidity62% (Humid)

Dew Point64° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

81°
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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™80°

Heat Index83°

WindSW 6 mph

Air QualityPoor

Max UV Index5.6 (High)

Wind Gusts7 mph

Humidity54%

Indoor Humidity54% (Humid)

Dew Point63° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

84°
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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™82°

Heat Index85°

WindSW 7 mph

Air QualityPoor

Max UV Index7.7 (Very High)

Wind Gusts12 mph

Humidity46%

Indoor Humidity46% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

87°
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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™84°

Heat Index86°

WindWSW 8 mph

Air QualityPoor

Max UV Index8.6 (Very High)

Wind Gusts15 mph

Humidity39%

Indoor Humidity39% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

89°
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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™85°

Heat Index87°

WindWSW 10 mph

Air QualityPoor

Max UV Index7.7 (Very High)

Wind Gusts18 mph

Humidity34%

Indoor Humidity34% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

90°
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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™87°

Heat Index88°

WindWSW 10 mph

Air QualityPoor

Max UV Index5.6 (High)

Wind Gusts20 mph

Humidity31%

Indoor Humidity31% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

89°
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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™85°

Heat Index87°

WindWSW 12 mph

Air QualityPoor

Max UV Index4.0 (Moderate)

Wind Gusts21 mph

Humidity32%

Indoor Humidity32% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

86°
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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™83°

Heat Index85°

WindWSW 10 mph

Air QualityPoor

Max UV Index2.5 (Low)

Wind Gusts22 mph

Humidity33%

Indoor Humidity33% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

84°
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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™81°

Heat Index83°

WindWSW 10 mph

Air QualityPoor

Max UV Index1.4 (Low)

Wind Gusts21 mph

Humidity36%

Indoor Humidity36% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

81°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™78°

Heat Index80°

WindSW 9 mph

Air QualityPoor

Max UV Index0.4 (Low)

Wind Gusts18 mph

Humidity42%

Indoor Humidity42% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

78°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindSW 8 mph

Air QualityPoor

Wind Gusts15 mph

Humidity47%

Indoor Humidity47% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover4%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

76°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindSW 7 mph

Air QualityPoor

Wind Gusts13 mph

Humidity54%

Indoor Humidity54% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover3%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

73°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindSW 6 mph

Air QualityPoor

Wind Gusts9 mph

Humidity62%

Indoor Humidity62% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover2%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

71°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindSW 6 mph

Air QualityPoor

Wind Gusts6 mph

Humidity66%

Indoor Humidity66% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Diamond Bar

AccuWeather's hourly forecast for Diamond Bar provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 78° with a RealFeel® of 84°, mostly sunny with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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Weather Near Diamond Bar:

  • Anaheim, CA
  • Long Beach, CA
  • Los Angeles, CA
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