Air Quality in South San Francisco, United States

Windy
15.4°C · 74.3% humidity
15.4°
Feels 15.4°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
73 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
1 12pm
8
8
17 3pm
14
13
31 6pm
30
30
29 9pm
29
29
28 12am
28
28
28 3am
8
8
1 6am
1
1
1 9am
1
1
Station readings
3
CAMS model adj -26
27
34
34
34
34
34
54
54
54
54
54
54
54
54
54
54
34
34
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

38h · 1 stn

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

74.3%
Humidity
99.4 km/h
Wind WNW
1018.1 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
17
3.99 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for South San Francisco?

Temperature & Precipitation

PM2.5 Trend

38h · 1 station
PM2.53.99 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (73 stations within 25 km)
3.99
Median
3.96
Average
0.77
Low
6.7
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +3.4

What is the 7-day forecast for South San Francisco?

05-28
15.4° 11.7°
05-29
15.4° 12.3°
05-30
14.0° 12.3°
05-31
16.6° 13.7°
0.25 mm
06-01
16.5° 12.6°
0.06 mm
06-02
15.0° 11.8°
0.06 mm
06-03
15.5° 11.1°
0.06 mm
Both models agree Avg diff: 1.9°C

Where are air quality stations near South San Francisco?

15
California and Cypress Ave
0.4 km PM2.5: 3.7 µg/m³
19
Rise South City Office
0.4 km PM2.5: 4.6 µg/m³
19
Cypress and Pine Playlot
0.5 km PM2.5: 4.6 µg/m³
14
California and Hawthorn Pl
0.5 km PM2.5: 3.4 µg/m³
14
Grand and Magnolia St
1.0 km PM2.5: 3.4 µg/m³
14
Gardiner Park
1.2 km PM2.5: 3.3 µg/m³
13
Orange Memorial Park
1.6 km PM2.5: 3.2 µg/m³
13
Brentwood Park
2.9 km PM2.5: 3.2 µg/m³
15
Buri Buri Park
2.9 km PM2.5: 3.5 µg/m³
25
Belle Air School
3.4 km PM2.5: 5.9 µg/m³

What cities are near South San Francisco?

15 San Bruno 16 Millbrae 16 Visitacion Valley 15 Daly City 14 Pacifica 15 Bayview-Hunters Point 16 Burlingame 16 Noe Valley 16 Mission District 13 Parkside
Get AQI alerts for South San Francisco

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T22:56 UTC.