What is the air quality in San Jose today?

The current Air Quality Index (AQI) in San Jose is 37 (Good). PM2.5 concentration is 8.77 µg/m³.

What is the temperature in San Jose right now?

The current temperature in San Jose is 22.6°C (feels like 22.6°C). Humidity is 31.3% and wind speed is 17.8 km/h.

Is it safe to go outside in San Jose?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in San Jose, United States

Clear

22.6°C · 31.3% humidity

22.6°

Feels 22.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

8 stations

Nearby Monitoring Stations

AQI Forecast

— 10am

—

— 1pm

—

— 4pm

—

— 7pm

—

— 10pm

—

— 1am

—

— 4am

—

— 7am

—

Air Quality Index Trend

45h · 80 stn

View full history →

San Jose's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

31.3%

Humidity

17.8 km/h

Wind WNW

1018.6 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

8.77 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for San Jose?

Temperature & Precipitation

PM2.5 Trend

45h · 80 stations

PM2.58.77 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (8 stations within 25 km)

8.77

Median

5.56

Average

3.02

Low

9.1

High

PM2.5 µg/m³ · Model: 5.8 · Bias: -3.0

What is the 7-day forecast for San Jose?

10-20

25.6° 15.7°

10-21

24.9° 16.0°

10-22

26.4° 16.5°

10-23

23.0° 17.1°

10-24

23.1° 15.2°

10-25

23.9° 14.3°

1.13 mm

10-26

22.5° 15.3°

Both models agree Avg diff: 5.6°C

Where are air quality stations near San Jose?

San Jose - Jackson St, Santa Clara, California

1.0 km PM2.5: 3.4 µg/m³

Cristo Rey Jesuit High School

3.0 km PM2.5: 6.5 µg/m³

San Jose-Knox Avenue, Santa Clara, California

4.0 km PM2.5: 9.1 µg/m³

Cupertino City Hall

12.0 km PM2.5: 3.5 µg/m³

JFK Middle School

14.1 km PM2.5: 4.9 µg/m³

Environment Education Center

15.2 km PM2.5: 3.1 µg/m³

N Foothhill Blvd

15.4 km PM2.5: 3.8 µg/m³

Acterra!

21.1 km PM2.5: 4.3 µg/m³

Berkeley-Palo Alto

25.7 km PM2.5: 3.6 µg/m³

Boulder Creek Fire Station

31.1 km PM2.5: 4.8 µg/m³

What cities are near San Jose?

26 Santa Clara 32 Alum Rock 24 Campbell 28 Milpitas 15 Cupertino 18 Sunnyvale 18 Saratoga 20 Los Gatos 18 Mountain View 18 Los Altos

Get AQI alerts for San Jose

Notify me when air quality reaches:

ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T20:06 UTC.