Air quality in South San Francisco
The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.
PM2.5
18.3 µg/m³
WHO guideline 15
PM10
21.2 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
5:00 AM
💨
PM2.5 18.3 µg/m³
64 Moderate
6:00 AM
💨
PM2.5 20.7 µg/m³
69 Moderate
7:00 AM
💨
PM2.5 22.8 µg/m³
74 Moderate
8:00 AM
💨
PM2.5 24.3 µg/m³
77 Moderate
9:00 AM
💨
PM2.5 24 µg/m³
76 Moderate
10:00 AM
💨
PM2.5 24 µg/m³
76 Moderate
11:00 AM
💨
PM2.5 23.7 µg/m³
75 Moderate
12:00 PM
💨
PM2.5 23 µg/m³
74 Moderate
1:00 PM
💨
PM2.5 20 µg/m³
68 Moderate
2:00 PM
💨
PM2.5 17.3 µg/m³
62 Moderate
3:00 PM
💨
PM2.5 15.8 µg/m³
59 Moderate
4:00 PM
💨
PM2.5 14.2 µg/m³
55 Moderate
Next few days daily max · US EPA AQI
Sat
💨
Moderate · UV High
77
Sun
💨
Moderate · UV Moderate
62
Mon
💨
Moderate · UV Moderate
58
Tue
💨
Moderate · UV High
57
Wed
💨
Moderate · UV High
58
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain