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 15th and Castro St., San Francisco
Air quality index (AQI) and PM2.5 air pollution near 15th and Castro St., San Francisco
182 people follow this station
Air Quality Map
Real-time 15th and Castro St. air pollution map
AIR QUALITY DATA CONTRIBUTORS
Find out more about contributors and data sourcesPollen
What is the pollen count in 15th and Castro St. today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather near 15th and Castro St., San Francisco?
| Weather | Few clouds |
| Temperature | 77°F |
| Humidity | 30% |
| Wind | 17.3 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  The Woodlands, Texas | 177 |
| 2 | Westlake, Louisiana | 157 |
| 3 | Port Arthur, Texas | 156 |
| 4 | Baytown, Texas | 155 |
| 5 | Galena Park, Texas | 155 |
| 6 | Corpus Christi, Texas | 153 |
| 7 | Pasadena, Texas | 153 |
| 8 | Lake Charles, Louisiana | 152 |
| 9 | Houston, Texas | 151 |
| 10 | Channelview, Texas | 147 |
(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 | 15th and Noe Street | 37 |
| 2 | Pacific Heights-GEOHealth_VMT_Basadre | 37 |
| 3 | 4256 22nd Street | 36 |
| 4 | Buchanan and Broadway | 36 |
| 5 | House Guerrero | 36 |
| 6 | Roosevelt Way | 36 |
| 7 | Russ Street 1 | 36 |
| 8 | 141 6th Avenue | 34 |
| 9 | 4181 26th Street | 34 |
| 10 | Pacific Heights 2 | 34 |
(local time)
SEE WORLD AQI RANKING
US AQI
25
live AQI index
Good
Overview
What is the current air quality near 15th and Castro St., San Francisco?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 25 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.6µg/m³ | |
Health Recommendations
What is the current air quality near 15th and Castro St., San Francisco?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
15th and Castro St., San Francisco air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Monday, May 6 | Good 15 AQI US | |||
| Tuesday, May 7 | Good 21 AQI US | |||
| Wednesday, May 8 | Good 23 AQI US | |||
| Today | Good 25 AQI US | | 77° 55.4° |  13.4 mp/h |
| Friday, May 10 | Good 37 AQI US |  | 66.2° 53.6° | 11.2 mp/h |
| Saturday, May 11 | Good 31 AQI US | | 62.6° 53.6° | 11.2 mp/h |
| Sunday, May 12 | Good 27 AQI US |  | 57.2° 50° | 8.9 mp/h |
| Monday, May 13 | Good 28 AQI US | | 59° 48.2° | 11.2 mp/h |
| Tuesday, May 14 | Good 22 AQI US | | 59° 48.2° | 11.2 mp/h |
| Wednesday, May 15 | Good 21 AQI US | | 60.8° 51.8° | 11.2 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
15th and Castro St. 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