Air Quality in South San Francisco, United States

Windy
15.2°C · 71.7% humidity
15.2°
Feels 15.2°
16
Good
Air quality is satisfactory. Enjoy outdoor activities.
75 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
18 4pm
17
17
14 7pm
14
14
14 10pm
14
14
14 1am
14
14
14 4am
14
14
26 7am
26
26
26 10am
26
39
14 1pm
26
26
Station readings
18
17
17
CAMS model adj -11
37
37
25
25
25
25
25
25
25
25
25
25
25
25
25
37
37
37
37
37
50
25
37
37
AD 728×90

PM2.5 Trend (24h)

26h · 107 stations
71.7%
Humidity
43.5 km/h
Wind WSW
1012.0 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for South San Francisco?

Temperature & Precipitation

PM2.53.8 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (75 stations within 25 km)
3.8
Median
3.78
Average
1.76
Low
10.7
High
PM2.5 µg/m³ · Model: 7.4 · Bias: +3.6
Both models agree Avg diff: 1.3°C

Where are air quality stations near South San Francisco?

11
California and Cypress Ave
0.4 km PM2.5: 2.7 µg/m³
19
Rise South City Office
0.4 km PM2.5: 4.6 µg/m³
15
Cypress and Pine Playlot
0.5 km PM2.5: 3.7 µg/m³
11
California and Hawthorn Pl
0.5 km PM2.5: 2.7 µg/m³
10
Grand and Magnolia St
1.0 km PM2.5: 2.4 µg/m³
10
Gardiner Park
1.2 km PM2.5: 2.3 µg/m³
8
Orange Memorial Park
1.6 km PM2.5: 1.8 µg/m³
10
Brentwood Park
2.9 km PM2.5: 2.5 µg/m³
9
Buri Buri Park
2.9 km PM2.5: 2.1 µg/m³
55
Belle Air School
3.4 km PM2.5: 14.0 µg/m³

What cities are near South San Francisco?

15 San Bruno 12 Millbrae 16 Visitacion Valley 15 Daly City 11 Pacifica 16 Bayview-Hunters Point 12 Burlingame 16 Noe Valley 16 Mission District 15 Parkside

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T19:35 UTC.