Current weather
Checking the latest reportMeasured conditions from the National Weather Service.
BEFORE YOU HEAD OUT
San Mateo weather, air quality and conditions
Plan around San Mateo’s forecast, nearby weather observations and current regional air reports.
Peak UV forecast
Checking the forecastThe EPA's daily peak forecast, with its own forecast date.
UV index guide ↗Weather alerts
Checking local alertsOfficial alerts covering the San Mateo area.
View the official forecast and alerts ↗Forecast
Forecast
Loading the National Weather Service forecast…
Official NWS forecast ↗Gas prices
View the gas guide for available station reports and their report times. Confirm pump prices and any cash or membership conditions with the station.
Air quality and roads
Current air-quality and highway information from the official services.
Check air quality and road closures before heading out. For pollen levels, consult a local allergy forecast.
Sunrise and sunset
Plan around sunrise, sunset and the golden-hour windows, calculated for San Mateo and shown in Pacific time.
Plan a golden hour →Conditions update throughout the day.
Rivers and streams
Latest readings from U.S. Geological Survey gauges near San Mateo. Provisional data, not a flood forecast; follow National Weather Service flood warnings.
San Mateo Creek below Lo Crystal Sp Reservoir near San Mateo CA
3 miles from the city center
- Flow
- Gage height
- Water temperature
Pilarcitos Creek above Stone Dam near Hillsborough CA
5.1 miles from the city center
- Flow
- Gage height
- Water temperature
Pilarcitos Creek below Stone Dam near Hillsborough CA
5.2 miles from the city center
- Flow
- Gage height
- Water temperature
San Mateo Creek below Junction Box at Dam1 near Hillsborough
5.7 miles from the city center
- Flow
- Gage height
- Water temperature
Where San Mateo's readings come from
- Forecast
- National Weather Service San Francisco Bay Area, CA office, forecast grid square 86,95. NWS San Francisco Bay Area, CA ↗
- Current conditions
- San Francisco, San Francisco International Airport (KSFO). KSFO recent observations ↗
- UV index
- EPA daily UV forecast for ZIP code 94401. About the UV index ↗
- Air quality
- AirNow reporting area: Redwood City, CA. AirNow ↗
- Weather alerts
- Active NWS alerts for the point at San Mateo's center, in San Mateo County. NWS alerts ↗
- Climate normals
- NOAA 1991–2020 normals at SAN FRANCISCO INTL AP, CA, 5.3 miles away: September averages a high of 75°F and January a low of 45°F, with about 20 inches of precipitation a year. NOAA normals data ↗