South San Francisco, CA Weather

04:21 Friday Artboard
Fog Fog Feels like Last Quarter Last Quarter Illuminated: 70%
  • Today 20 Dec. Fog 14° / Calm 12 - 27 km/h
  • Tomorrow 21 Dec. Light rain 70% 1.6 mm 15° / 10° Calm 20 - 39 km/h
  • Sunday 22 Dec. Light rain 70% 2.8 mm 18° / 12° Calm 13 - 28 km/h
  • Monday 23 Dec. Partly cloudy 18° / 13° Calm 13 - 25 km/h
  • Tuesday 24 Dec. Moderate rain 90% 13 mm 16° / 11° Calm 33 - 62 km/h
  • Wednesday 25 Dec. Scattered clouds 13° / Calm 14 - 33 km/h
  • Thursday 26 Dec. Light rain 60% 1.6 mm 15° / Calm 19 - 46 km/h

Weather Forecast for South San Francisco, CA Today

, 20 December

Tomorrow

, 21 December
04:00 Fog Fog
Feels Like
Calm East 6 - 16 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 100%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 98%
  • Feels Like Feels Like 5 °C
  • Visibility Visibility 250 m
  • Wind Wind - Average 6 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog Yes
  • Wind - Gusts Wind - Gusts 16 km/h
  • Snowline Snowline 3900 m
05:00 Mist Mist
Feels Like
Calm East 7 - 16 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 100%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 95%
  • Feels Like Feels Like 5 °C
  • Visibility Visibility 950 m
  • Wind Wind - Average 7 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog Yes
  • Wind - Gusts Wind - Gusts 16 km/h
  • Snowline Snowline 3800 m
06:00 Fog Fog
Feels Like
Calm East 5 - 16 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 100%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 97%
  • Feels Like Feels Like 5 °C
  • Visibility Visibility 550 m
  • Wind Wind - Average 5 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog Yes
  • Wind - Gusts Wind - Gusts 16 km/h
  • Snowline Snowline 3800 m
07:00 Overcast Overcast
Feels Like
Calm Northeast 6 - 16 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 100%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 97%
  • Feels Like Feels Like 5 °C
  • Visibility Visibility 1 km
  • Wind Wind - Average 6 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 16 km/h
  • Snowline Snowline 3800 m
Fog 08:00 Fog Fog
Feels Like
Calm Northeast 6 - 15 km/h
UV Index 0 Low SPF: no
Fog 08:00 Fog Fog
Feels Like
Calm Northeast 6 - 15 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 100%
  • Dew Point Dew Point 6 °C
  • Clouds Clouds 98%
  • Feels Like Feels Like 6 °C
  • Visibility Visibility 550 m
  • Wind Wind - Average 6 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog Yes
  • Wind - Gusts Wind - Gusts 15 km/h
  • Snowline Snowline 3800 m
09:00 Overcast Overcast
Feels Like
Calm Northeast 6 - 15 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 100%
  • Dew Point Dew Point 8 °C
  • Clouds Clouds 97%
  • Feels Like Feels Like 7 °C
  • Visibility Visibility 7 km
  • Wind Wind - Average 6 km/h
  • Pressure Pressure 1021 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 15 km/h
  • Snowline Snowline 3800 m
10:00 Partly cloudy Partly cloudy
Feels Like
Calm Northeast 5 - 15 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 99%
  • Dew Point Dew Point 8 °C
  • Clouds Clouds 86%
  • Feels Like Feels Like 8 °C
  • Visibility Visibility 3 km
  • Wind Wind - Average 5 km/h
  • Pressure Pressure 1021 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 15 km/h
  • Snowline Snowline 3800 m
Partly cloudy 11:00 Partly cloudy 10° Partly cloudy
Feels Like 10°
Calm North 4 - 13 km/h
UV Index 1 Low SPF: no
Partly cloudy 11:00 Partly cloudy 10° Overcast
Feels Like 10°
Calm North 4 - 13 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 94%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 74%
  • Feels Like Feels Like 10 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 4 km/h
  • Pressure Pressure 1021 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 13 km/h
  • Snowline Snowline 3800 m
12:00 Overcast 11° Overcast
Feels Like 11°
Calm Northeast 4 - 14 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 86%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 100%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 4 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 14 km/h
  • Snowline Snowline 3800 m
13:00 Overcast 12° Overcast
Feels Like 12°
Calm East 7 - 17 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 82%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 97%
  • Feels Like Feels Like 12 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 7 km/h
  • Pressure Pressure 1019 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 17 km/h
  • Snowline Snowline 3700 m
Partly cloudy 14:00 Partly cloudy 12° Partly cloudy
Feels Like 12°
Calm West 2 - 17 km/h
UV Index 1 Low SPF: no
Partly cloudy 14:00 Partly cloudy 12° Overcast
Feels Like 12°
Calm West 2 - 17 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 79%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 72%
  • Feels Like Feels Like 12 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 2 km/h
  • Pressure Pressure 1019 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 17 km/h
  • Snowline Snowline 3700 m
15:00 Partly cloudy 13° Partly cloudy
Feels Like 13°
Calm Northwest 2 - 11 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 78%
  • Dew Point Dew Point 10 °C
  • Clouds Clouds 63%
  • Feels Like Feels Like 13 °C
  • Visibility Visibility 40 km
  • Wind Wind - Average 2 km/h
  • Pressure Pressure 1019 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 11 km/h
  • Snowline Snowline 3700 m
16:00 Scattered clouds 13° Scattered clouds
Feels Like 13°
Calm Northwest 4 - 18 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 86%
  • Dew Point Dew Point 11 °C
  • Clouds Clouds 21%
  • Feels Like Feels Like 13 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 4 km/h
  • Pressure Pressure 1019 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 18 km/h
  • Snowline Snowline 3800 m
Scattered clouds 17:00 Scattered clouds 11° Scattered clouds
Feels Like 11°
Calm Northwest 6 - 12 km/h
UV Index 0 Low SPF: no
Scattered clouds 17:00 Scattered clouds 11° Scattered clouds
Feels Like 11°
Calm Northwest 6 - 12 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 94%
  • Dew Point Dew Point 10 °C
  • Clouds Clouds 49%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 35 km
  • Wind Wind - Average 6 km/h
  • Pressure Pressure 1019 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 12 km/h
  • Snowline Snowline 3800 m
18:00 Scattered clouds 10° Scattered clouds
Feels Like 10°
Calm North 6 - 13 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 98%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 52%
  • Feels Like Feels Like 10 °C
  • Visibility Visibility 25 km
  • Wind Wind - Average 6 km/h
  • Pressure Pressure 1019 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 13 km/h
  • Snowline Snowline 3800 m
19:00 High clouds 10° High clouds
Feels Like 10°
Calm West 5 - 16 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 98%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 55%
  • Feels Like Feels Like 10 °C
  • Visibility Visibility 20 km
  • Wind Wind - Average 5 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 16 km/h
  • Snowline Snowline 3800 m
Partly cloudy 20:00 Partly cloudy 10° Partly cloudy
Feels Like 10°
Calm West 4 - 19 km/h
UV Index 0 Low SPF: no
Partly cloudy 20:00 Partly cloudy 10° Partly cloudy
Feels Like 10°
Calm West 4 - 19 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 94%
  • Dew Point Dew Point 9 °C
  • Clouds Clouds 71%
  • Feels Like Feels Like 10 °C
  • Visibility Visibility 25 km
  • Wind Wind - Average 4 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 19 km/h
  • Snowline Snowline 3700 m
21:00 Partly cloudy 11° Partly cloudy
Feels Like 11°
Calm South 5 - 24 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 93%
  • Dew Point Dew Point 10 °C
  • Clouds Clouds 84%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 20 km
  • Wind Wind - Average 5 km/h
  • Pressure Pressure 1021 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 24 km/h
  • Snowline Snowline 3800 m
22:00 Partly cloudy 11° Partly cloudy
Feels Like 11°
Calm South 9 - 27 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 92%
  • Dew Point Dew Point 10 °C
  • Clouds Clouds 86%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 9 km/h
  • Pressure Pressure 1021 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 27 km/h
  • Snowline Snowline 3700 m
Partly cloudy 23:00 Partly cloudy 11° Partly cloudy
Feels Like 11°
Calm Southeast 11 - 24 km/h
UV Index 0 Low SPF: no
Partly cloudy 23:00 Partly cloudy 11° Partly cloudy
Feels Like 11°
Calm Southeast 11 - 24 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 91%
  • Dew Point Dew Point 10 °C
  • Clouds Clouds 79%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 11 km/h
  • Pressure Pressure 1021 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 24 km/h
  • Snowline Snowline 3800 m
24:00 Partly cloudy 11° Partly cloudy
Feels Like 11°
Calm Southeast 12 - 24 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 94%
  • Dew Point Dew Point 10 °C
  • Clouds Clouds 93%
  • Feels Like Feels Like 11 °C
  • Visibility Visibility 30 km
  • Wind Wind - Average 12 km/h
  • Pressure Pressure 1020 hPa
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 24 km/h
  • Snowline Snowline 3700 m

Air quality in South San Francisco today

Detail
45
Moderate PM₂₅ (30 µg/m³)
  • Possible health risk.
  • Enjoy your usual outdoor activities if you do not experience symptoms.
  • Sensitive people should limit prolonged or intense outdoor activities.

Weather graphs

Maximum Minimum Rainfall
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