San Francisco Air Quality – AQI, PM2.5 & PM10 Today
31
Fair
European AQI · US AQI 53
- PM2.5
- 9.5
- PM10
- 15.8
- O₃
- 82.0
- NO₂
- 4.8
- SO₂
- 0.4
- CO
- 148.0
- Dust
- 0.0
- UV
- 0.2
Summary
Maximum UV of 4.2 at 12:00 — wear a hat for longer stints outdoors.
Humidity of 83% pushes the felt temperature to 14°C.
Wind runs 17 km/h out of the west.
Common questions
Will it rain in San Francisco today?
No. The chance of rain today is only about 0%.
How hot is it in San Francisco today?
Between 10°C and 22°C, with a felt maximum of 21°C.
What is the weather in San Francisco tomorrow?
Tomorrow: overcast, 12–22°C, with a 0% chance of rain.