Air Quality in Alum Rock, United States

Clear
24.9°C · 36.1% humidity
24.9°
Feels 24.9°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast
34 3pm
34
54
63 6pm
60
59
57 9pm
56
56
55 12am
55
55
54 3am
54
54
54 6am
54
54
54 9am
34
34
34 12pm
34
34
AD 728×90

Air Quality Index Trend

45h · 76 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 24-hour guideline of 15 µg/m³.

36.1%
Humidity
20.6 km/h
Wind WNW
1010.9 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
63
17.65 µg/m³
PM10
38
41.15 µg/m³
050100150200300500

What is the weather forecast for Alum Rock?

Temperature & Precipitation

PM2.5 Trend

45h · 76 stations
PM2.517.65 µg/m³ ×1.2 WHO
Moderate
PM1041.15 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250

What is the 7-day forecast for Alum Rock?

08-03
28.5° 15.9°
08-04
28.0° 18.9°
08-05
28.2° 15.2°
08-06
29.4° 16.2°
08-07
25.6° 19.1°
08-08
28.2° 15.9°
08-09
29.5° 16.1°
Both models agree Avg diff: 1.9°C

Where are air quality stations near Alum Rock?

44
Cristo Rey Jesuit High School
3.7 km PM2.5: 10.6 µg/m³
46
San Jose-Knox Avenue, Santa Clara, California
3.7 km PM2.5: 11.0 µg/m³
53
San Jose-Knox Avenue, Santa Clara, California
3.7 km PM2.5: 13.1 µg/m³
57
San Jose-Knox Avenue, Santa Clara, California
3.7 km PM2.5: 15.0 µg/m³
50
San Jose - Jackson St, Santa Clara, California
6.3 km PM2.5: 12.0 µg/m³
55
San Jose - Jackson St, Santa Clara, California
6.3 km PM2.5: 14.0 µg/m³
35
Cupertino City Hall
18.6 km PM2.5: 8.4 µg/m³
51
JFK Middle School
20.7 km PM2.5: 12.1 µg/m³
34
Environment Education Center
21.7 km PM2.5: 8.1 µg/m³
37
N Foothhill Blvd
21.9 km PM2.5: 8.8 µg/m³

What cities are near Alum Rock?

63 San Jose 69 Milpitas 64 Santa Clara 63 Campbell 64 Sunnyvale 64 Cupertino 63 Los Gatos 63 Saratoga 64 Mountain View 63 Los Altos
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T01:03 UTC.