Today | Weather | Thursday, October 30, 2025

Weather in Sunnyvale, California

11:31 AM
Now
Cloudy Weather
66° F
Feels Like 70°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 3
Humidity 66 %
Today
Cloudy Weather
Day 72°
Night 52°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 3

Sunnyvale Weather Forecast Updated

34 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (October 30, 2024)

Rainy Night

Day

68°

Night

52°

Wind

4 mph

Precipitation

96

Air Quality in Sunnyvale

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 8.36 µg/m³
PM10 30.49 µg/m³
O3 0.043 ppm
NO2 0.4 ppb
SO2 0.3 ppb
CO 0.09 ppm
NH3 0 µg/m³
NO 0.12 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.58.36 µg/m³
PM1030.49 µg/m³
O383.77 µg/m³
NO20.79 µg/m³
SO20.85 µg/m³
CO102.61 µg/m³
NH30 µg/m³
NO0.12 µg/m³