Air Quality in San Jose, United States
Partly Cloudy
18.3°C · 58.4% humidity
18.3°
Feels 18.3°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations
Nearby Monitoring Stations
AQI Forecast
Calibrated
20
1pm
19
20
17
4pm
17
17
4
7pm
4
4
17
10pm
17
4
17
1am
17
17
17
4am
17
29
42
7am
42
67
67
10am
67
42
Station readings
20
19
20
CAMS model
adj -8
25
25
25
25
25
25
12
12
12
25
25
12
25
25
25
25
25
37
50
50
75
75
75
50
PM2.5 Trend (24h)
24h · 78 stations58.4%
Humidity
25.2 km/h
Wind S
1011.3 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
What is the weather forecast for San Jose?
Temperature & Precipitation
PM2.57.01 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
Station readings (6 stations within 25 km)
7.01
Median
6.93
Average
3.86
Low
9.81
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -1.1
What is the 7-day forecast for San Jose?
04-09
21.8° 15.0°
0.94 mm
04-10
18.7° 12.1°
2.94 mm
04-11
19.3° 11.5°
0.06 mm
04-12
13.2° 9.0°
6.75 mm
04-13
14.8° 7.6°
0.25 mm
04-14
17.7° 8.3°
04-15
20.5° 11.0°
Both models agree
Avg diff: 2.2°C
Where are air quality stations near San Jose?
8
San Jose - Jackson St, Santa Clara, California
28
San Jose - Jackson St, Santa Clara, California
33
Cristo Rey Jesuit High School
30
San Jose-Knox Avenue, Santa Clara, California
9
San Jose-Knox Avenue, Santa Clara, California
24
Andrew Hill High School
28
Cupertino City Hall
43
JFK Middle School
19
Environment Education Center
30
N Foothhill Blvd
What cities are near San Jose?
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T16:59 UTC.