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Air quality in San Francisco
Air quality index (AQI) and PM2.5 air pollution in San Francisco
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San Francisco Air Quality Map
Real-time San Francisco air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Weather
What is the current weather in San Francisco?
| Weather | Broken clouds |
| Temperature | 86°F |
| Humidity | 66% |
| Wind | 3.5 mp/h |
| Pressure | 29.7 Hg |
live aqi city ranking
Real-time Honduras city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Tegucigalpa, Francisco Morazan | 141 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Spotlight
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US AQI
86*
live AQI index
Moderate
Overview
What is the current air quality in San Francisco?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 86* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 27.8*µg/m³ | |
!
PM2.5
x5.6
PM2.5 concentration in San Francisco is currently 5.6 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in San Francisco?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
San Francisco air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 15 | Moderate 86 AQI US | | 93.2° 78.8° |  6.7 mp/h |
| Today | Moderate 86 AQI US | | 96.8° 80.6° | 6.7 mp/h |
| Friday, May 17 | Moderate 56 AQI US | | 96.8° 80.6° | 4.5 mp/h |
| Saturday, May 18 | Moderate 59 AQI US |  20% | 93.2° 78.8° | 6.7 mp/h |
| Sunday, May 19 | Moderate 60 AQI US | 30% | 89.6° 78.8° | 6.7 mp/h |
| Monday, May 20 | Moderate 67 AQI US | | 93.2° 77° | 6.7 mp/h |
| Tuesday, May 21 | Moderate 65 AQI US | 30% | 93.2° 78.8° | 6.7 mp/h |
| Wednesday, May 22 | Moderate 63 AQI US | 30% | 93.2° 77° | 6.7 mp/h |
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News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in San Francisco?
No locations are available.
AQI US, Metric