Today | Weather | Friday, April 3, 2026

Weather in Santa Clara, California

12:31 PM
Now
Sunny Weather
72° F
Feels Like 77°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 7
Humidity 26 %
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
52 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.49 µg/m³
PM10 9.93 µg/m³
O3 0.055 ppm
NO2 1.3 ppb
SO2 0.7 ppb
CO 0.14 ppm
NH3 0.46 µg/m³
NO 0.59 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.55.49 µg/m³
PM109.93 µg/m³
O3107.21 µg/m³
NO22.49 µg/m³
SO21.86 µg/m³
CO164.12 µg/m³
NH30.46 µg/m³
NO0.59 µg/m³