Today | Weather | Monday, August 25, 2025

Weather in San Francisco, California

02:44 PM
Now
Cloudy WeatherCloudy weather, overcast skies with clouds.
66° F
Feels Like 68°
Precipitation 0 %
Wind 15 mph
UV Index (0 - 11+) 11
Humidity 74 %
Today
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 66°
Night 61°
Precipitation 0 %
Wind 10 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:

A mix of sunshine and cloud cover.

San Francisco Weather Forecast Updated

54 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 25, 2024)

Sunny WeatherSunny weather, clear skies and sunny weather.

Day

75°

Night

57°

Wind

7 mph

UV Index

8

Precipitation

0

Air quality in San Francisco

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

Pollutant Concentrations:

PM2.5 9.46 µg/m³
PM10 12.85 µg/m³
O₃ 34.71 ppb
NO₂ 3.02 ppb
SO₂ 0.60 ppb
CO 139.99 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