Today | Weather | Sunday, November 15, 2026

Weather in San Jose, California

02:47 AM
Now
Cloudy Night
54° F
Feels Like 52°
Precipitation 1 %
Wind 6 mph
Humidity 76 %
Today
Rainy Weather
Day 64°
Night 52°
Precipitation 71 %
Wind 9 mph
UV Index (0 - 11+) 1

San Jose Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 15, 2025)
Rainy Weather

Day

64°

Night

55°

Wind

7 mph

Precipitation

100 %

Air Quality in San Jose

NOW
49 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.49 µg/m³
PM10 8.1 µg/m³
O3 0.052 ppm
NO2 0.3 ppb
SO2 0.2 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)
PM2.5 – 2.49 µg/m³
PM10 – 8.1 µg/m³
O3 – 102.85 µg/m³
NO2 – 0.55 µg/m³
SO2 – 0.52 µg/m³
CO – 117.16 µg/m³
NH3 – 0 µg/m³
NO – 0 µg/m³