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Costa Mesa, CA

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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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Hourly

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

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3 PM

81°

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.

0%

Mostly sunny

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

RealFeel Shade™81°

Heat Index83°

WindW 9 mph

Air QualityFair

Max UV Index4.3 (Moderate)

Wind Gusts15 mph

Humidity63%

Indoor Humidity63% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

81°

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.

0%

Mostly sunny

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

RealFeel Shade™80°

Heat Index83°

WindW 9 mph

Air QualityFair

Max UV Index3.0 (Moderate)

Wind Gusts16 mph

Humidity61%

Indoor Humidity61% (Humid)

Dew Point66° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

80°

RealFeel® 81°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Mostly sunny

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

RealFeel Shade™79°

Heat Index80°

WindW 9 mph

Air QualityFair

Max UV Index1.9 (Low)

Wind Gusts16 mph

Humidity64%

Indoor Humidity64% (Humid)

Dew Point66° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

78°

RealFeel® 79°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Mostly sunny

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

RealFeel Shade™79°

WindW 7 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts12 mph

Humidity68%

Indoor Humidity68% (Humid)

Dew Point66° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

76°

RealFeel® 76°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Mostly clear

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

WindWSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity74%

Indoor Humidity74% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

73°

RealFeel® 74°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Mostly clear

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

WindWSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity81%

Indoor Humidity81% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

70°

RealFeel® 71°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Mostly clear

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

WindSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity89%

Indoor Humidity89% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

70°

RealFeel® 71°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Mostly clear

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

WindSSW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity90%

Indoor Humidity90% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

69°

RealFeel® 71°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Mostly clear

Beach Hazards Statement

5:00 AM Friday - 5:00 AM Monday

WindSSW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity91%

Indoor Humidity91% (Very Humid)

Dew Point67° 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 81° with a RealFeel® of 86°, 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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