Air Quality in San Mateo, United States

Drizzle
16.3°C · 60.3% humidity
16.3°
Feels 16.3°
12
Good
Air quality is satisfactory. Enjoy outdoor activities.
36 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
17 7pm
16
13
13 10pm
13
13
13 1am
13
13
13 4am
13
13
25 7am
25
25
25 10am
25
38
13 1pm
25
25
25 4pm
25
25
Station readings
17
16
CAMS model adj -12
25
25
25
25
25
25
25
25
25
25
25
25
37
37
37
37
37
50
25
37
37
37
37
37
AD 728×90

PM2.5 Trend (24h)

25h · 107 stations
60.3%
Humidity
48.0 km/h
Wind WSW
1010.0 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for San Mateo?

Temperature & Precipitation

PM2.53.04 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (36 stations within 25 km)
3.04
Median
4.07
Average
2.11
Low
24.24
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?

83
Belle Air School
9.8 km PM2.5: 27.2 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: 2.4 µg/m³
12
California and Hawthorn Pl
13.0 km PM2.5: 3.0 µg/m³
17
Emerald Hills
13.1 km PM2.5: 4.0 µg/m³

What cities are near San Mateo?

12 Burlingame 16 Foster City 12 Belmont 13 Millbrae 12 San Carlos 14 San Bruno 14 Redwood City 15 South San Francisco 12 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 2026-04-09T22:25 UTC.