Air Quality in Alum Rock, United States

Windy
21.7°C · 44.3% humidity
21.7°
Feels 21.7°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast
25 2pm
27
27
26 5pm
34
34
54 8pm
54
54
54 11pm
54
54
54 2am
54
34
34 5am
34
34
34 8am
27
27
27 11am
27
27
AD 728×90

Air Quality Index Trend

46h · 2 stn

Alum Rock's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Alum Rock is 1.2× the WHO annual guideline of 5 µg/m³.

44.3%
Humidity
63.1 km/h
Wind NW
1017.4 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
26
6.25 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Alum Rock?

Temperature & Precipitation

PM2.5 Trend

46h · 2 stations
PM2.56.25 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX6.9
High
AD 300×250

What is the 7-day forecast for Alum Rock?

05-29
22.7° 12.7°
05-30
22.0° 15.0°
05-31
28.4° 18.6°
06-01
28.1° 14.0°
06-02
23.5° 13.9°
06-03
28.3° 10.5°
06-04
28.6° 11.7°
Both models agree Avg diff: 3.5°C

Where are air quality stations near Alum Rock?

16
Cristo Rey Jesuit High School
3.7 km PM2.5: 3.8 µg/m³
28
San Jose-Knox Avenue, Santa Clara, California
3.7 km PM2.5: 6.7 µg/m³
41
San Jose-Knox Avenue, Santa Clara, California
3.7 km PM2.5: 9.8 µg/m³
33
San Jose - Jackson St, Santa Clara, California
6.3 km PM2.5: 7.9 µg/m³
14
Cupertino City Hall
18.6 km PM2.5: 3.3 µg/m³
17
JFK Middle School
20.7 km PM2.5: 4.0 µg/m³
13
Environment Education Center
21.7 km PM2.5: 3.1 µg/m³
14
N Foothhill Blvd
21.9 km PM2.5: 3.3 µg/m³
15
Acterra!
25.5 km PM2.5: 3.6 µg/m³

What cities are near Alum Rock?

26 San Jose 26 Milpitas 26 Santa Clara 27 Campbell 26 Sunnyvale 26 Cupertino 27 Los Gatos 27 Saratoga 26 Mountain View 27 Los Altos
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T00:24 UTC.