Air Quality in South San Francisco, United States

Windy
14.6°C · 65.5% humidity
14.6°
Feels 14.6°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
15 3pm
15
15
17 6pm
15
15
15 9pm
15
15
15 12am
15
15
15 3am
15
15
15 6am
0
0
0 9am
0
15
15 12pm
15
0
Station readings
10
23
CAMS model adj -39
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
34
34
34
34
54
54
54
34
AD 728×90

Air Quality Index Trend

42h · 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.

65.5%
Humidity
126.4 km/h
Wind WNW
1016.5 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

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

What is the weather forecast for South San Francisco?

Temperature & Precipitation

PM2.5 Trend

42h · 1 station
PM2.54.03 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (1 station within 25 km)
4.03
Median
4.03
Average
4.03
Low
4.03
High
PM2.5 µg/m³ · Model: 9.65 · Bias: +5.6

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

06-09
14.6° 12.3°
06-10
16.5° 13.0°
06-11
17.4° 13.2°
06-12
16.1° 12.3°
0.13 mm
06-13
15.2° 11.8°
06-14
18.3° 13.0°
06-15
16.3° 12.0°
Both models agree Avg diff: 1.4°C

Where are air quality stations near South San Francisco?

19
California and Cypress Ave
0.4 km PM2.5: 4.6 µg/m³
43
Rise South City Office
0.4 km PM2.5: 10.3 µg/m³
25
Cypress and Pine Playlot
0.5 km PM2.5: 6.0 µg/m³
18
California and Hawthorn Pl
0.5 km PM2.5: 4.3 µg/m³
18
Grand and Magnolia St
1.0 km PM2.5: 4.2 µg/m³
19
Gardiner Park
1.2 km PM2.5: 4.5 µg/m³
19
Orange Memorial Park
1.6 km PM2.5: 4.5 µg/m³
18
Brentwood Park
2.9 km PM2.5: 4.2 µg/m³
17
Buri Buri Park
2.9 km PM2.5: 4.1 µg/m³
17
Belle Air School
3.4 km PM2.5: 4.1 µg/m³

What cities are near South San Francisco?

17 San Bruno 17 Millbrae 17 Visitacion Valley 17 Daly City 17 Pacifica 17 Bayview-Hunters Point 17 Burlingame 17 Noe Valley 17 Mission District 17 Parkside
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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 2026-06-09T01:07 UTC.