Today | Weather | Saturday, October 24, 2026

Weather in Sunnyvale, California

04:30 PM
Now
Sunny Weather
73° F
Feels Like 73°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 2
Humidity 34 %
Today
Sunny Weather
Day 75°
Night 48°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 4

Sunnyvale Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 24, 2025)
Cloudy Night

Day

68°

Night

54°

Wind

6 mph

Precipitation

4 %

Air Quality in Sunnyvale

NOW
45 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.24 µg/m³
PM10 17.09 µg/m³
O3 0.048 ppm
NO2 0.5 ppb
SO2 0.5 ppb
CO 0.13 ppm
NH3 0.02 µg/m³
NO 0.14 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)
PM2.5 – 6.24 µg/m³
PM10 – 17.09 µg/m³
O3 – 95.06 µg/m³
NO2 – 0.93 µg/m³
SO2 – 1.2 µg/m³
CO – 152.12 µg/m³
NH3 – 0.02 µg/m³
NO – 0.14 µg/m³