Today | Weather | Saturday, October 4, 2025

Weather in San Jose, California

11:24 PM

Now

61° F

Feels Like 61°

Precipitation 0 %

Wind 5 mph

Humidity 80 %

Today

Day 77°

Night 55°

Precipitation 0 %

Wind 5 mph

San Jose Weather Forecast Updated

33 minutes ago

Last updated on October 04, 2025 10:50 PM

Last Year's Weather on This Day (October 4, 2024)

99°

64°

2 mph

NOW

54 AQI

Moderate air quality Dominant pollutant: PM2.5

PM2.5 14.62 µg/m³

PM10 18.47 µg/m³

O₃ 15.71 ppb

NO₂ 17.62 ppb

SO₂ 1.45 ppb

CO 230.40 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.