Current weather
Checking the latest reportMeasured conditions from the National Weather Service.
BEFORE YOU HEAD OUT
Sunnyvale weather, air quality and conditions
Plan around Sunnyvale’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 Sunnyvale 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 Sunnyvale 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 Sunnyvale. Provisional data, not a flood forecast; follow National Weather Service flood warnings.
Guadalupe River above Highway 101 at San Jose CA
5.7 miles from the city center
- Flow
- Gage height
- Water temperature
Coyote Creek above Highway 237 at Milpitas CA
7 miles from the city center
- Flow
- Gage height
- Water temperature
Saratoga Creek at Saratoga CA
8.1 miles from the city center
- Flow
- Gage height
- Water temperature
San Francisquito Creek at Stanford University CA
9.1 miles from the city center
- Flow
- Gage height
- Water temperature
Where Sunnyvale's readings come from
- Forecast
- National Weather Service San Francisco Bay Area, CA office, forecast grid square 94,85. NWS San Francisco Bay Area, CA ↗
- Current conditions
- Mountain View, Moffett Field (KNUQ). KNUQ recent observations ↗
- UV index
- EPA daily UV forecast for ZIP code 94086. About the UV index ↗
- Air quality
- AirNow reporting area: San Jose, CA. AirNow ↗
- Weather alerts
- Active NWS alerts for the point at Sunnyvale's center, in Santa Clara County. NWS alerts ↗
- Climate normals
- NOAA 1991–2020 normals at MOFFETT FEDERAL AIRFIELD, CA, 2.5 miles away: September averages a high of 78°F and December a low of 42°F, with about 14 inches of precipitation a year. NOAA normals data ↗