Today | Weather | Thursday, September 4, 2025

Weather in Santa Rosa, California

10:36 AM
Now
Cloudy WeatherCloudy weather, overcast skies with clouds.
64° F
Feels Like 68°
Precipitation 32 %
Wind 6 mph
UV Index (0 - 11+) 11
Humidity 73 %
Today
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 75°
Night 54°
Precipitation 40 %
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.

Other:

Clouds giving way to sun with a twist.

Santa Rosa Weather Forecast Updated

Last updated on

Weather Forecast History

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

Sunny WeatherSunny weather, clear skies and sunny weather.

Day

95°

Night

54°

Wind

4 mph

UV Index

7

Precipitation

0

Air quality in Santa Rosa

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

Pollutant Concentrations:

PM2.5 5.99 µg/m³
PM10 10.22 µg/m³
O₃ 20.76 ppb
NO₂ 4.74 ppb
SO₂ 0.42 ppb
CO 193.03 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