Stay updated with real-time air quality in San Bruno, California featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
37
Good
San Bruno, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.12 μg/m³
0
55
155
255
425
605+
39.62 ppb
0
55
71
86
201
201+
0.42 ppb
0
36
76
186
605
1005+
4.93 ppb
0
54
101
361
1250
2050+
0.36 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
San Bruno, California
San Bruno, California
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AQI 36
Good
3.49μg/m³
PM2.5
15.20μg/m³
PM10
38.88ppb
O3
0.38ppb
SO2
3.48ppb
NO2
0.39ppm
CO
AQI 41
Good
3.60μg/m³
PM2.5
17.21μg/m³
PM10
43.79ppb
O3
0.39ppb
SO2
3.49ppb
NO2
0.38ppm
CO
AQI 42
Good
3.70μg/m³
PM2.5
18.79μg/m³
PM10
44.51ppb
O3
0.41ppb
SO2
3.47ppb
NO2
0.37ppm
CO
AQI 42
Good
3.85μg/m³
PM2.5
17.23μg/m³
PM10
45.25ppb
O3
0.39ppb
SO2
3.47ppb
NO2
0.39ppm
CO
AQI 41
Good
3.60μg/m³
PM2.5
17.21μg/m³
PM10
43.79ppb
O3
0.39ppb
SO2
3.49ppb
NO2
0.38ppm
CO
AQI 25
Good
3.02μg/m³
PM2.5
12.63μg/m³
PM10
26.95ppb
O3
0.26ppb
SO2
2.84ppb
NO2
0.36ppm
CO
Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for San Bruno, California is updated on an hourly basis.
The worst air quality in San Bruno, California was recorded at 06:00:00 on 2026-06-12.
The best air quality in San Bruno, California was recorded at 06:00:00 on 2026-06-12.
The real-time air quality index in San Bruno, California is 36, currently categorized as Good.
The most common pollutant in San Bruno, California is O3.
If the air quality in San Bruno, California is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in San Bruno, California at present are 3.491 μg/m3.
The current PM10 levels in San Bruno, California are 15.195 μg/m3.
The current carbon monoxide (CO) level in San Bruno, California is 0.388 ppm.
The current sulfur dioxide (SO2) levels in San Bruno, California are 0.378 ppb.
The current ozone (O3) levels at San Bruno, California is 38.878 ppm.
The current nitrogen dioxide (NO2) levels at San Bruno, California is 3.483 ppb.
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