Today | Weather | Wednesday, November 19, 2025

Weather in Sunnyvale, California

12:35 PM
Now
Cloudy Weather
61° F
Feels Like 64°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 3
Humidity 70 %
Today
Cloudy Weather
Day 61°
Night 52°
Precipitation 14 %
Wind 5 mph
UV Index (0 - 11+) 3

Sunnyvale Weather Forecast Updated

33 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 19, 2024)
Cloudy Night

Day

64°

Night

50°

Wind

6 mph

Precipitation

10 %

Air Quality in Sunnyvale

NOW
42 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.68 µg/m³
PM10 9.23 µg/m³
O3 0.045 ppm
NO2 0.2 ppb
SO2 0.2 ppb
CO 0.10 ppm
NH3 0 µg/m³
NO 0.04 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)
PM2.52.68 µg/m³
PM109.23 µg/m³
O388.45 µg/m³
NO20.45 µg/m³
SO20.49 µg/m³
CO110.81 µg/m³
NH30 µg/m³
NO0.04 µg/m³