← All Cities
San Mateo, CA
Updated 10/16/2026, 1:39:54 AM PDT
📤
Share San Mateo Conditions
WEATHER
63°F.
Clear. Wind 0 mph.
7-Day Forecast →
AIR
AQI 42 (Good).
Good
Hazardous
AQI 42
PUBLIC ALERTS
No active federal alerts reported.
ROADS
US-101 • CA-92
View official Caltrans QuickMap →
☀️ Free Morning Snapshot
One email each morning with today's essential local conditions.
Subscribe
No spam. Unsubscribe anytime.
Local Partners
Sources
:
NWS
•
AirNow
•
NOAA Aviation Weather
•
Open-Meteo
•
Caltrans