Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in San Ysidro
Air quality index (AQI) and PM2.5 air pollution in San Ysidro
36 people follow this city
San Ysidro Air Quality Map
Real-time San Ysidro air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in San Ysidro today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Weather
What is the current weather in San Ysidro?
| Weather | Clear sky |
| Temperature | 60.8°F |
| Humidity | 44% |
| Wind | 8.1 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Coachella, California | 172 |
| 2 | Palm Desert, California | 164 |
| 3 | Indio, California | 81 |
| 4 | Campo, California | 69 |
| 5 | Auberry, California | 64 |
| 6 | Pahrump, Nevada | 63 |
| 7 | Thermal, California | 63 |
| 8 | San Bernardino, California | 61 |
| 9 | North Fork, California | 60 |
| 10 | Palmdale, California | 60 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
38*
live AQI index
Good
Overview
What is the current air quality in San Ysidro?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 38* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 9.2*µg/m³ | |
!
PM2.5
x1.8
PM2.5 concentration in San Ysidro is currently 1.8 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in San Ysidro?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
San Ysidro air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 38 AQI US |  | 86° 60.8° |  17.9 mp/h |
| Wednesday, Apr 24 | Good 10 AQI US |  | 82.4° 60.8° | 13.4 mp/h |
| Thursday, Apr 25 | Good 8 AQI US | | 78.8° 64.4° | 31.3 mp/h |
| Friday, Apr 26 | Good 11 AQI US | | 77° 51.8° | 22.4 mp/h |
| Saturday, Apr 27 | Good 21 AQI US |  | 69.8° 53.6° | 31.3 mp/h |
| Sunday, Apr 28 | Good 12 AQI US | | 75.2° 48.2° | 20.1 mp/h |
| Monday, Apr 29 | Good 4 AQI US | | 82.4° 53.6° | 8.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Where is the cleanest air quality in San Ysidro?
No locations are available.
AQI US, Metric