Today | Weather | Monday, July 20, 2026

Weather in Santa Clara, California

02:21 PM
Now
Rainy Weather
81° F
Feels Like 81°
Precipitation 44 %
Wind 9 mph
UV Index (0 - 11+) 4
Humidity 46 %
Today
Partly Sunny with Showers
Day 81°
Night 63°
Precipitation 87 %
Wind 7 mph
UV Index (0 - 11+) 7

Santa Clara Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 20, 2025)
Cloudy Night

Day

77°

Night

55°

Wind

6 mph

Precipitation

1 %

Air Quality in Santa Clara

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.5 µg/m³
PM10 8.04 µg/m³
O3 0.038 ppm
NO2 0.3 ppb
SO2 0.3 ppb
CO 0.08 ppm
NH3 0 µg/m³
NO 0.08 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)
PM2.53.5 µg/m³
PM108.04 µg/m³
O375.02 µg/m³
NO20.55 µg/m³
SO20.75 µg/m³
CO89.18 µg/m³
NH30 µg/m³
NO0.08 µg/m³