Today | Weather | Thursday, February 5, 2026

Weather in Santa Clara, California

05:35 PM
Now
Cloudy Night
64° F
Feels Like 64°
Precipitation 0 %
Wind 5 mph
Humidity 61 %
Today
Cloudy Weather
Day 72°
Night 50°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 3

Santa Clara Weather Forecast Updated

18 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 5, 2025)
Cloudy Weather

Day

61°

Night

43°

Wind

6 mph

UV Index

3

Precipitation

1 %

Air Quality in Santa Clara

NOW
107 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 38.16 µg/m³
PM10 41.7 µg/m³
O3 0.048 ppm
NO2 1.6 ppb
SO2 0.4 ppb
CO 0.24 ppm
NH3 0.45 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.538.16 µg/m³
PM1041.7 µg/m³
O395.01 µg/m³
NO22.94 µg/m³
SO21.17 µg/m³
CO278.38 µg/m³
NH30.45 µg/m³
NO0 µg/m³