San Francisco Air Quality – AQI, PM2.5 & PM10 Today
22
Fair
European AQI · US AQI 40
- PM2.5
- 7.9
- PM10
- 11.5
- O₃
- 55.0
- NO₂
- 4.6
- SO₂
- 0.8
- CO
- 103.0
- Dust
- 0.0
- UV
- 6.2
Summary
Maximum UV of 6.4 at 14:00 — wear a hat for longer stints outdoors.
Humidity of 93% pushes the felt temperature to 14°C.
Wind runs 18 km/h out of the west.
Common questions
Will it rain in San Francisco today?
No. The chance of rain today is only about 2%.
How hot is it in San Francisco today?
Between 14°C and 16°C, with a felt maximum of 15°C.
What is the weather in San Francisco tomorrow?
Tomorrow: overcast, 13–21°C, with a 1% chance of rain.