Today | Weather | Sunday, May 31, 2026

Weather in Santa Clara, California

10:05 PM
Now
Night
63° F
Feels Like 61°
Precipitation 0 %
Wind 7 mph
Humidity 62 %
Today
Night
Day 82°
Night 54°
Precipitation 0 %
Wind 6 mph

Santa Clara Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 31, 2025)
Sunny Weather

Day

91°

Night

57°

Wind

7 mph

UV Index

11

Precipitation

0 %

Air Quality in Santa Clara

NOW
41 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.16 µg/m³
PM10 21.44 µg/m³
O3 0.044 ppm
NO2 0.4 ppb
SO2 0.4 ppb
CO 0.10 ppm
NH3 0 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)
PM2.55.16 µg/m³
PM1021.44 µg/m³
O386.8 µg/m³
NO20.79 µg/m³
SO21.08 µg/m³
CO111.7 µg/m³
NH30 µg/m³
NO0 µg/m³