Today's Weather Forecast - San Francisco
Today's weather in San Francisco. high 20°C (68°F), low 14°C (57°F). Foggy.
Today’s Hourly Weather Outlook
- Wind speed
- 18 km/h
- Rain probability
- 1%
- Wind speed
- 29 km/h
- Rain probability
- 1%
- Wind speed
- 29 km/h
- Rain probability
- 2%
- Wind speed
- 16 km/h
- Rain probability
- 2%
24-Hour Rain & Temperature Forecast
Sunrise & Sunset
Air Quality Index & Health Advice
Air Quality Index
- Air quality level
- Good
- Dominant pollutant
- Dominant: O3
- Monitoring station
- San Francisco-Arkansas Street, San Francisco, California
- PM2.5
- 21μg/m³
- O₃
- 22.4ppb
- NO₂
- 1.1ppb
- CO
- 1.2ppm
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
San Francisco is forecast to reach a high of 20°C today, with an overnight low around 14°C. That's 4° below the long-term average high of 24°C for this time of year. It continues a recent pattern — 4 of the last 19 days with published data have run cooler than normal. Expect little chance of rain (2% probability) and moderate breezes averaging 29 km/h. Air quality is currently Moderate (AQI 57), driven mainly by PM2.5 at 12 μg/m³.
Today vs Normal
The long-term average high for today is 24°C.
4 of the last 19 days with published data ran above normal.
It continues that pattern - today's forecast is also running below normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.