Today | Weather | Sunday, December 14, 2025

Weather in Santa Clara, California

05:19 AM
Now
Foggy Weather
39° F
Feels Like 39°
Precipitation 17 %
Wind 5 mph
Humidity 100 %
Today
Cloudy Weather
Day 57°
Night 39°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 2

Santa Clara Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 14, 2024)
Cloudy Night

Day

59°

Night

39°

Wind

4 mph

Precipitation

1 %

Air Quality in Santa Clara

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 8.72 µg/m³
PM10 15.35 µg/m³
O3 0.040 ppm
NO2 0.8 ppb
SO2 0.4 ppb
CO 0.11 ppm
NH3 0.05 µg/m³
NO 0 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)
PM2.58.72 µg/m³
PM1015.35 µg/m³
O377.84 µg/m³
NO21.49 µg/m³
SO21.13 µg/m³
CO120.96 µg/m³
NH30.05 µg/m³
NO0 µg/m³