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Costa Mesa, CA

72°F
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Costa Mesa

California

72°
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Costa Mesa, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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

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1 PM

74°
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
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™72°

WindWSW 8 mph

Air QualityPoor

Max UV Index11.5 (Extreme)

Wind Gusts13 mph

Humidity67%

Indoor Humidity67% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover35%

Visibility8 mi

Cloud Ceiling30000 ft

2 PM

75°
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™73°

WindWSW 9 mph

Air QualityPoor

Max UV Index10.7 (Extreme)

Wind Gusts15 mph

Humidity61%

Indoor Humidity61% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

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
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™74°

WindWSW 9 mph

Air QualityPoor

Max UV Index7.8 (Very High)

Wind Gusts17 mph

Humidity59%

Indoor Humidity59% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

76°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™73°

WindWSW 9 mph

Air QualityPoor

Max UV Index4.9 (Moderate)

Wind Gusts18 mph

Humidity61%

Indoor Humidity61% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

75°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™72°

WindWSW 9 mph

Air QualityPoor

Max UV Index3.3 (Moderate)

Wind Gusts18 mph

Humidity63%

Indoor Humidity63% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

74°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™72°

WindWSW 9 mph

Air QualityPoor

Max UV Index2.0 (Low)

Wind Gusts17 mph

Humidity65%

Indoor Humidity65% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover12%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

72°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™70°

WindWSW 8 mph

Air QualityPoor

Max UV Index1.0 (Low)

Wind Gusts16 mph

Humidity69%

Indoor Humidity69% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover16%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

70°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™68°

WindWSW 7 mph

Air QualityPoor

Max UV Index0.1 (Low)

Wind Gusts13 mph

Humidity75%

Indoor Humidity75% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

67°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSW 7 mph

Air QualityFair

Wind Gusts9 mph

Humidity82%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

65°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity88%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

65°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity88%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Costa Mesa

AccuWeather's hourly forecast for Costa Mesa provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 74° with a RealFeel® of 82°, partly 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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