Air Quality in San Mateo, United States

Partly Cloudy
16.1°C · 67.8% humidity
16.1°
Feels 16.1°
12
Good
Air quality is satisfactory. Enjoy outdoor activities.
35 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
17 5pm
17
17
14 8pm
14
14
14 11pm
14
14
14 2am
14
14
14 5am
14
26
26 8am
26
26
26 11am
39
14
26 2pm
26
26
Station readings
17
17
17
CAMS model adj -11
37
25
25
25
25
25
25
25
25
25
25
25
25
25
37
37
37
37
37
50
25
37
37
37
AD 728×90

PM2.5 Trend (24h)

25h · 108 stations
67.8%
Humidity
22.1 km/h
Wind NW
1011.5 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for San Mateo?

Temperature & Precipitation

PM2.53.0 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (35 stations within 25 km)
3.0
Median
3.84
Average
1.88
Low
13.97
High
PM2.5 µg/m³ · Model: 7.4 · Bias: +4.4

What is the 7-day forecast for San Mateo?

04-09
18.7° 13.2°
0.62 mm
04-10
16.3° 11.5°
1.0 mm
04-11
16.0° 10.3°
04-12
12.4° 9.2°
3.38 mm
04-13
12.8° 7.4°
0.06 mm
04-14
15.2° 7.6°
04-15
17.4° 9.5°
Both models agree Avg diff: 2.1°C

Where are air quality stations near San Mateo?

70
Belle Air School
9.8 km PM2.5: 21.3 µg/m³
12
Parkside Intermediate School
10.1 km PM2.5: 3.0 µg/m³
13
San Bruno School District Office
10.4 km PM2.5: 3.1 µg/m³
11
Brentwood Park
12.6 km PM2.5: 2.7 µg/m³
12
California and Cypress Ave
12.8 km PM2.5: 2.9 µg/m³
17
Rise South City Office
12.8 km PM2.5: 4.1 µg/m³
16
Cypress and Pine Playlot
12.8 km PM2.5: 3.8 µg/m³
10
Rollingwood Elementary
12.9 km PM2.5: 2.3 µg/m³
12
California and Hawthorn Pl
13.0 km PM2.5: 2.9 µg/m³
18
Emerald Hills
13.1 km PM2.5: 4.3 µg/m³

What cities are near San Mateo?

12 Burlingame 17 Foster City 12 Belmont 12 Millbrae 11 San Carlos 15 San Bruno 14 Redwood City 16 South San Francisco 11 Pacifica 25 Menlo Park

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T20:34 UTC.