Air Quality in Los Altos, 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
Los Altos's air quality — share it
AQI Forecast
34
4pm
54
54
63
7pm
60
59
57
10pm
56
56
55
1am
55
55
54
4am
54
54
54
7am
54
54
34
10am
34
34
34
1pm
34
34
Air Quality Index Trend
45h · 101 stnLos Altos'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 Los Altos 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▲
17.65 µg/m³
PM10
66.15 µg/m³
050100150200300500
What is the weather forecast for Los Altos?
Temperature & Precipitation
PM2.5 Trend
45h · 101 stationsPM2.517.65 µg/m³
×1.2 WHO
Moderate
PM1066.15 µg/m³
Moderate
UV INDEX17.4
Extreme
What is the 7-day forecast for Los Altos?
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 Los Altos?
31
Acterra!
35
N Foothhill Blvd
24
Berkeley-Palo Alto
32
Environment Education Center
48
JFK Middle School
34
Cupertino City Hall
3
Redwood City, San Mateo, California
29
Emerald Hills
59
San Jose - Jackson St, Santa Clara, California
55
San Jose - Jackson St, Santa Clara, California
What cities are near Los Altos?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T02:07 UTC.