Air Quality in Millbrae, United States

Windy
15.7°C · 76.4% humidity
15.7°
Feels 15.7°
4
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
19 4pm
19
19
4 7pm
14
21
26 10pm
30
32
14 1am
16
17
17 4am
11
18
18 7am
19
19
19 10am
19
19
19 1pm
19
19
Station readings
23
16
31
CAMS model adj -15
34
34
34
54
54
54
54
54
54
34
34
34
34
27
34
34
34
34
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

45h · 1 stn

Millbrae's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

76.4%
Humidity
47.4 km/h
Wind SW
1011.8 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
4
1.0 µg/m³
PM10▲
65
84.3 µg/m³
050100150200300500

What is the weather forecast for Millbrae?

Temperature & Precipitation

PM2.5 Trend

45h · 1 station
PM2.51.0 µg/m³ ✓ WHO
Good
PM1084.3 µg/m³
Moderate
UV INDEX12.9
Extreme
AD 300×250
Station readings (1 station within 25 km)
1.0
Median
1.0
Average
1.0
Low
1.0
High
PM2.5 µg/m³ · Model: 30.95 · Bias: +30.0

What is the 7-day forecast for Millbrae?

08-03
17.2° 14.4°
0.13 mm
08-04
15.9° 14.3°
0.06 mm
08-05
17.5° 13.7°
08-06
16.7° 14.6°
08-07
17.2° 14.5°
08-08
16.5° 14.4°
0.06 mm
08-09
20.1° 15.0°
Both models agree Avg diff: 1.5°C

Where are air quality stations near Millbrae?

32
Garden Ave Residence
3.2 km PM2.5: 7.7 µg/m³
28
Belle Air School
3.3 km PM2.5: 6.8 µg/m³
38
Parkside Intermediate School
3.4 km PM2.5: 9.0 µg/m³
29
San Bruno School District Office
3.7 km PM2.5: 6.9 µg/m³
33
Pacific Ave Residence
5.2 km PM2.5: 8.0 µg/m³
26
Brentwood Park
5.9 km PM2.5: 6.2 µg/m³
25
Rollingwood Elementary
6.1 km PM2.5: 6.0 µg/m³
25
Portola Elementary
6.5 km PM2.5: 5.9 µg/m³
50
Rise South City Office
6.7 km PM2.5: 11.9 µg/m³
37
Cypress and Pine Playlot
6.9 km PM2.5: 8.8 µg/m³

What cities are near Millbrae?

4 Burlingame 4 San Bruno 4 South San Francisco 91 San Mateo 4 Pacifica 64 Foster City 64 Belmont 4 Visitacion Valley 4 Daly City 4 Bayview-Hunters Point
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T02:58 UTC.