California and Hawthorn Pl Air Quality

Monitoring Station · South San Francisco, United States
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
23 4am
21
21
21 7am
21
21
21 10am
21
21
21 1pm
1
1
1 4pm
1
7pm
10pm
1am
CAMS model adj -33
54
54
54
54
54
54
54
54
54
54
34
34
34
34
PM2.55.5 µg/m³ ✓ WHO
Good
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Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T07:09 UTC.