and then 
to Add to home screen San Francisco
Rise 7:21AM
Set 5:21PM
Reporting Station : San Francisco International Airport, CA
There are
8 Weather Alerts
for your area.
8 Weather Alerts
for your area.
56°F
Passing clouds. Refreshingly cool.
- 44%
- 5 mphWNW
-
44%
Humidity -
34°F
Dew Point -
55°F
Comfort Level -
10 mi
Visibility -
30.46 in
Barometric Pressure - Air Quality
Last Quarter
Rise12:18AM
Set11:10AM
TUESDAY EVENING
SFO / No delays
Air Quality Observations
| Station Name | Concentration | Category |
|---|---|---|
| Colfax | 43 ppb |  Good |
| Lassen Volcanic NP | 45 ppb | Good |
Air Quality Forecast
| Date | Pollutant | Concentration | Category |
|---|---|---|---|
| 20 Jan | Particulates smaller than 2.5 microns | 32 ppb | Good |
| 21 Jan | Particulates smaller than 2.5 microns | 64 ppb |  Moderate |
| 22 Jan | Particulates smaller than 2.5 microns | 66 ppb | Moderate |
| 23 Jan | Particulates smaller than 2.5 microns | n/a | Moderate |
| 24 Jan | Particulates smaller than 2.5 microns | n/a | Moderate |
| 25 Jan | Particulates smaller than 2.5 microns | n/a | Moderate |
| 26 Jan | Particulates smaller than 2.5 microns | n/a | Moderate |
Oakland
San Rafael
Redwood City
Rise 7:21AM
Set 5:21PM
Last Quarter
Rise12:18AM
Set11:10AM
TUESDAY EVENING
SFO / No delays
Extended Forecast
| Date | Category | Reason |
|---|---|---|
| 22 Jan Wednesday | Good |
well-mixed atmosphere |
| 23 Jan Thursday | Good |
well-mixed atmosphere, low pressure |
| 24 Jan Friday | Good |
well-mixed atmosphere, low pressure |
| 25 Jan Saturday | Good |
strong winds, well-mixed atmosphere, low pressure |
| 26 Jan Sunday | Good |
well-mixed atmosphere, low pressure |
| 27 Jan Monday | Good |
well-mixed atmosphere, low pressure |
| 28 Jan Tuesday | Good |
well-mixed atmosphere, low pressure |
Detailed Forecast
| Date | Category | Reason |
|---|---|---|
| 21 Jan Evening | Good |
well-mixed atmosphere |
| 22 Jan Night | Good |
cold temperatures, well-mixed atmosphere |
| 22 Jan Morning | Good |
well-mixed atmosphere |
| 22 Jan Afternoon | Good |
well-mixed atmosphere |
| 22 Jan Evening | Good |
well-mixed atmosphere |
| 23 Jan Night | Good |
well-mixed atmosphere, low pressure |
| 23 Jan Morning | Good |
well-mixed atmosphere, low pressure |
| 23 Jan Afternoon | Good |
well-mixed atmosphere, low pressure |