Today | Weather | Friday, April 3, 2026

Weather in Santa Clara, California

08:50 AM
Now
Sunny Weather
54° F
Feels Like 55°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 56 %
Today
Sunny Weather
Day 75°
Night 50°
Precipitation 1 %
Wind 8 mph
UV Index (0 - 11+) 7

Santa Clara Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 3, 2025)
Cloudy Weather

Day

66°

Night

41°

Wind

7 mph

UV Index

7

Precipitation

7 %

Air Quality in Santa Clara

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.35 µg/m³
PM10 8.51 µg/m³
O3 0.043 ppm
NO2 1.9 ppb
SO2 0.7 ppb
CO 0.13 ppm
NH3 0.25 µg/m³
NO 0.44 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)
PM2.52.35 µg/m³
PM108.51 µg/m³
O384.49 µg/m³
NO23.55 µg/m³
SO21.76 µg/m³
CO152.49 µg/m³
NH30.25 µg/m³
NO0.44 µg/m³