Air Quality in San Jose, United States

Partly Cloudy
27.1°C · 51.8% humidity
27.1°
Feels 29.2°
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
7 stations

Nearby Monitoring Stations

AQI Forecast
34 5am
34
54
33 8am
34
27
27 11am
27
27
27 2pm
27
27
27 5pm
27
27
27 8pm
27
34
34 11pm
34
34
34 2am
34
34
AD 728×90

Air Quality Index Trend

45h · 83 stn

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.

51.8%
Humidity
27.7 km/h
Wind WNW
1016.2 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
33
7.89 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for San Jose?

Temperature & Precipitation

PM2.5 Trend

45h · 83 stations
PM2.57.89 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (7 stations within 25 km)
7.89
Median
5.2
Average
3.5
Low
8.2
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -0.5

What is the 7-day forecast for San Jose?

09-05
31.5° 17.2°
09-06
31.6° 18.6°
09-07
34.4° 15.7°
09-08
32.8° 16.2°
09-09
30.5° 18.5°
09-10
28.9° 16.2°
09-11
27.4° 19.0°
Both models agree Avg diff: 3.9°C

Where are air quality stations near San Jose?

34
San Jose - Jackson St, Santa Clara, California
1.0 km PM2.5: 8.2 µg/m³
24
Cristo Rey Jesuit High School
3.0 km PM2.5: 5.8 µg/m³
26
Andrew Hill High School
7.8 km PM2.5: 6.3 µg/m³
17
Cupertino City Hall
12.0 km PM2.5: 4.0 µg/m³
23
JFK Middle School
14.1 km PM2.5: 5.6 µg/m³
15
Environment Education Center
15.2 km PM2.5: 3.5 µg/m³
18
N Foothhill Blvd
15.4 km PM2.5: 4.2 µg/m³
22
Acterra!
21.1 km PM2.5: 5.2 µg/m³
12
Berkeley-Palo Alto
25.7 km PM2.5: 3.0 µg/m³
21
Boulder Creek Fire Station
31.1 km PM2.5: 5.0 µg/m³

What cities are near San Jose?

24 Santa Clara 26 Alum Rock 22 Campbell 25 Milpitas 17 Cupertino 20 Sunnyvale 19 Saratoga 20 Los Gatos 20 Mountain View 20 Los Altos
Get AQI alerts for San Jose

Notify me when air quality reaches:

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 2026-09-05T15:10 UTC.