Today | Weather | Monday, April 6, 2026

Weather in San Jose, California

02:59 AM
Now
Cloudy Night
55° F
Feels Like 55°
Precipitation 0 %
Wind 5 mph
Humidity 76 %
Today
Cloudy Weather
Day 72°
Night 48°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 7

San Jose Weather Forecast Updated

40 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 6, 2025)
Cloudy Weather

Day

75°

Night

54°

Wind

7 mph

UV Index

5

Precipitation

2 %

Air Quality in San Jose

NOW
49 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.46 µg/m³
PM10 14.59 µg/m³
O3 0.053 ppm
NO2 0.5 ppb
SO2 0.5 ppb
CO 0.11 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)
PM2.55.46 µg/m³
PM1014.59 µg/m³
O3104.95 µg/m³
NO20.94 µg/m³
SO21.19 µg/m³
CO130.05 µg/m³
NH30 µg/m³
NO0 µg/m³