Today | Weather | Saturday, August 29, 2026

Weather in Santa Clara, California

05:07 PM
Now
Sunny Weather
81° F
Feels Like 79°
Precipitation 0 %
Wind 14 mph
UV Index (0 - 11+) 2
Humidity 42 %
Today
Cloudy Weather
Day 81°
Night 55°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Santa Clara Weather Forecast Updated

22 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 29, 2025)
Night

Day

77°

Night

57°

Wind

6 mph

Precipitation

0 %

Air Quality in Santa Clara

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.55 µg/m³
PM10 13.45 µg/m³
O3 0.039 ppm
NO2 0.1 ppb
SO2 0.2 ppb
CO 0.09 ppm
NH3 0 µg/m³
NO 0.06 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)
PM2.53.55 µg/m³
PM1013.45 µg/m³
O376.66 µg/m³
NO20.27 µg/m³
SO20.6 µg/m³
CO98.85 µg/m³
NH30 µg/m³
NO0.06 µg/m³