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South San Francisco, CA
Updated 10/2/2026, 11:18:23 AM PDT
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Share South San Francisco Conditions
WEATHER
70°F.
Partly sunny. Wind 1 mph E.
7-Day Forecast →
Low 53°
High 80°
Current
AIR
AQI 29 (Good).
Good
Hazardous
AQI 29
PUBLIC ALERTS
2 active alerts
Heat Advisory
Coastal Flood Advisory
ROADS
US-101 • I-280
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Sources
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NWS
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AirNow
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Caltrans