Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality near Lake & 21st Avenue, San Francisco
Air quality index (AQI) and PM2.5 air pollution near Lake & 21st Avenue, San Francisco
757 people follow this station
Air Quality Map
Real-time Lake & 21st Avenue air pollution map
AIR QUALITY DATA CONTRIBUTORS
Find out more about contributors and data sourcesPollen
What is the pollen count in Lake & 21st Avenue today?
 | Index | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather near Lake & 21st Avenue, San Francisco?
| Weather | Clear sky |
| Temperature | 64.4°F |
| Humidity | 56% |
| Wind | 13 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Allentown, Pennsylvania | 67 |
| 2 | Bethlehem, Pennsylvania | 66 |
| 3 | Mecca, California | 63 |
| 4 | Quakertown, Pennsylvania | 63 |
| 5 | Coopersburg, Pennsylvania | 62 |
| 6 | Lewisville, Texas | 62 |
| 7 | Big Bear Lake, California | 61 |
| 8 | Saint Clair, Pennsylvania | 61 |
| 9 | Philadelphia, Pennsylvania | 59 |
| 10 | Wichita, Kansas | 59 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live aqi station ranking
Real-time San Francisco air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Sunset Co-op Nursery School | 76 |
| 2 | Shore View Ave | 53 |
| 3 | Downey Street | 45 |
| 4 | House Guerrero | 30 |
| 5 | Mission District 2 | 29 |
| 6 | Safer Together/Bernal | 29 |
| 7 | Baker Beach | 28 |
| 8 | 3398 Baker Street | 25 |
| 9 | Potrero Hill 2 | 25 |
| 10 | 15th and Noe Street | 24 |
(local time)
SEE WORLD AQI RANKING
US AQI
18
live AQI index
Good
Overview
What is the current air quality near Lake & 21st Avenue, San Francisco?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 18 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.4µg/m³ | |
Health Recommendations
What is the current air quality near Lake & 21st Avenue, San Francisco?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Lake & 21st Avenue, San Francisco air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Saturday, Apr 27 | Good 11 AQI US | |||
| Sunday, Apr 28 | Good 14 AQI US | |||
| Monday, Apr 29 | Good 17 AQI US | |||
| Today | Good 18 AQI US | | 64.4° 46.4° |  17.9 mp/h |
| Wednesday, May 1 | Good 15 AQI US | | 60.8° 50° | 13.4 mp/h |
| Thursday, May 2 | Good 16 AQI US |  | 60.8° 50° | 17.9 mp/h |
| Friday, May 3 | Good 15 AQI US |  | 59° 51.8° | 15.7 mp/h |
| Saturday, May 4 | Good 13 AQI US |  100% | 51.8° 48.2° | 15.7 mp/h |
| Sunday, May 5 | Good 7 AQI US | 20% | 53.6° 46.4° | 20.1 mp/h |
| Monday, May 6 | Good 11 AQI US | | 55.4° 46.4° | 13.4 mp/h |
| Tuesday, May 7 | Good 13 AQI US | | 57.2° 48.2° | 13.4 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Lake & 21st Avenue air quality data attribution
Contributor
Anonymous Contributor
Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in San Francisco?
No locations are available.
AQI US, Metric