Today | Weather | Saturday, September 27, 2025

Weather in Santa Ana, California

03:59 AM
Now
Cloudy Weather
68° F
Feels Like 66°
Precipitation 5 %
Wind 5 mph
Humidity 80 %
Today
Partly Sunny with Showers
Day 79°
Night 66°
Precipitation 45 %
Wind 11
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.

Santa Ana Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 27, 2024)

Cloudy Night

Day

75°

Night

57°

Wind

4 mph

Precipitation

0

Air quality in Santa Ana

NOW
44 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 11.06 µg/m³
PM10 13.54 µg/m³
O₃ 30.56 ppb
NO₂ 6.06 ppb
SO₂ 1.10 ppb
CO 150.80 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors