California and Hawthorn Pl Air Quality

Monitoring Station · South San Francisco, United States
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
26 7pm
25
25
25 10pm
32
32
32 1am
32
32
32 4am
32
32
32 7am
32
10am
1pm
4pm
Station readings
26
25
CAMS model adj -2
27
27
27
27
34
34
34
34
34
34
34
34
34
34
PM2.55.9 µg/m³ ✓ WHO
Good
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Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T22:04 UTC.