Air Quality in South San Francisco, United States

Windy
12.3°C · 78.6% humidity
12.3°
Feels 12.3°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
75 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
14 9pm
14
14
29 12am
25
22
20 3am
18
17
16 6am
1
1
1 9am
1
14
14 12pm
14
0
0 3pm
0
0
0 6pm
0
0
Station readings
19
12
12
14
CAMS model adj -40
54
54
54
54
54
54
54
54
54
54
34
34
34
34
54
54
54
34
34
34
27
27
27
27
AD 728×90

Air Quality Index Trend

43h · 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.

78.6%
Humidity
73.9 km/h
Wind WNW
1016.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
29
6.9 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for South San Francisco?

Temperature & Precipitation

PM2.5 Trend

43h · 1 station
PM2.56.9 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (75 stations within 25 km)
6.9
Median
5.75
Average
2.82
Low
9.32
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +2.8

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?

25
California and Cypress Ave
0.4 km PM2.5: 6.0 µg/m³
31
Rise South City Office
0.4 km PM2.5: 7.5 µg/m³
39
Cypress and Pine Playlot
0.5 km PM2.5: 9.3 µg/m³
24
California and Hawthorn Pl
0.5 km PM2.5: 5.8 µg/m³
23
Grand and Magnolia St
1.0 km PM2.5: 5.6 µg/m³
24
Gardiner Park
1.2 km PM2.5: 5.7 µg/m³
25
Orange Memorial Park
1.6 km PM2.5: 6.1 µg/m³
21
Brentwood Park
2.9 km PM2.5: 5.0 µg/m³
23
Buri Buri Park
2.9 km PM2.5: 5.6 µg/m³
22
Belle Air School
3.4 km PM2.5: 5.2 µg/m³

What cities are near South San Francisco?

24 San Bruno 25 Millbrae 27 Visitacion Valley 25 Daly City 27 Pacifica 28 Bayview-Hunters Point 25 Burlingame 24 Noe Valley 24 Mission District 21 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 2026-06-09T07:52 UTC.