Belle Air School

Monitoring Station · San Bruno, United States
83
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
70 7pm
83
41
41 10pm
41
41
41 1am
41
41
41 4am
41
41
53 7am
53
—
— 10am
—
—
— 1pm
—
—
— 4pm
—
—
Station readings
70
83
CAMS model adj +16
25
25
25
25
25
25
25
25
25
25
25
25
37
37

Air Quality Trend (24h)

PM2.527.2 µg/m³ ×1.8 WHO
Moderate

Nearby Monitoring Stations

13
San Bruno School District Office
1.0 km PM2.5: 3.1 µg/m³
12
Parkside Intermediate School
1.6 km PM2.5: 3.0 µg/m³
11
Brentwood Park
2.9 km PM2.5: 2.7 µg/m³
10
Rollingwood Elementary
3.5 km PM2.5: 2.4 µg/m³
17
Rise South City Office
3.5 km PM2.5: 4.1 µg/m³
12
California and Cypress Ave
3.7 km PM2.5: 2.9 µg/m³
16
Cypress and Pine Playlot
3.8 km PM2.5: 3.8 µg/m³
12
California and Hawthorn Pl
3.9 km PM2.5: 3.0 µg/m³

Nearby Cities

14 San Bruno 13 Millbrae 15 South San Francisco 12 Burlingame 12 Pacifica 12 San Mateo 15 Visitacion Valley 14 Daly City 15 Bayview-Hunters Point

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-09T22:19 UTC.