Today | Weather | Friday, July 4, 2025

Air Quality Alert (Issued when air pollution levels are unhealthy, especially for sensitive groups.) Beach Hazards Statement (Potential hazards at beaches, such as dangerous currents, high surf, or unexpected waves.)

Costa Mesa, California. 08:13 PM

Now

68° F

Feels Like 66°

Precipitation 0 %

Wind 7 mph

UV Index (0 - 11+) 0

Humidity 83 %

Today

Day 75°

Night 61°

Precipitation 1 %

Wind 7 mph

UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Costa Mesa Weather Forecast Updated

Weather Forecast History

Last Year's Weather on This Day (July 4, 2024)

Day

70°

Night

64°