Today | Weather | Tuesday, February 24, 2026

Weather in Sunnyvale, California

01:47 PM
Now
Cloudy Weather
70° F
Feels Like 70°
Precipitation 49 %
Wind 9 mph
UV Index (0 - 11+) 1
Humidity 58 %
Today
Rainy Weather
Day 72°
Night 57°
Precipitation 90 %
Wind 9 mph
UV Index (0 - 11+) 2

Sunnyvale Weather Forecast Updated

48 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 24, 2025)
Cloudy Weather

Day

66°

Night

45°

Wind

6 mph

UV Index

2

Precipitation

25 %

Air Quality in Sunnyvale

NOW
45 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.61 µg/m³
PM10 8.09 µg/m³
O3 0.048 ppm
NO2 0.4 ppb
SO2 0.3 ppb
CO 0.11 ppm
NH3 0 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)
PM2.53.61 µg/m³
PM108.09 µg/m³
O394.38 µg/m³
NO20.67 µg/m³
SO20.75 µg/m³
CO125.11 µg/m³
NH30 µg/m³
NO0.14 µg/m³