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 13:00 — wear a hat for longer stints outdoors.
Humidity of 93% pushes the felt temperature to 14°C.
Wind runs 17 km/h out of the south-west.
Common questions
Will it rain in San Francisco today?
No. The chance of rain today is only about 1%.
How hot is it in San Francisco today?
Between 13°C and 21°C, with a felt maximum of 22°C.
What is the weather in San Francisco tomorrow?
Tomorrow: overcast, 15–23°C, with a 0% chance of rain.