Today | Weather | Monday, September 8, 2025

Weather in Santa Rosa, California

02:43 PM
Now
Cloudy Weather
77° F
Feels Like 77°
Precipitation 17 %
Wind 10 mph
UV Index (0 - 11+) 11
Humidity 59 %
Today
Rainy Weather
Day 79°
Night 59°
Precipitation 49 %
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 Rosa Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 8, 2024)

Cloudy Weather

Day

93°

Night

50°

Wind

4 mph

UV Index

7

Precipitation

43

Air quality in Santa Rosa

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

Pollutant Concentrations:

PM2.5 4.46 µg/m³
PM10 6.31 µg/m³
O₃ 20.72 ppb
NO₂ 3.73 ppb
SO₂ 0.34 ppb
CO 199.97 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