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Air quality in San Ysidro
Air quality index (AQI) and PM2.5 air pollution in San Ysidro
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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 |
Source: tomorrow.io
Weather
What is the current weather in San Ysidro?
| Weather | Clear sky |
| Temperature | 55.4°F |
| Humidity | 36% |
| Wind | 5 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Corpus Christi, Texas | 75 |
| 2 | San Antonio, Texas | 71 |
| 3 | New Braunfels, Texas | 70 |
| 4 | Buffalo, New York | 68 |
| 5 | Lancaster, Pennsylvania | 68 |
| 6 | Braddock, Pennsylvania | 66 |
| 7 | West Mifflin, Pennsylvania | 66 |
| 8 | Casa Grande, Arizona | 65 |
| 9 | Allentown, Pennsylvania | 63 |
| 10 | Camden, New Jersey | 63 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
12*
live AQI index
Good
Overview
What is the current air quality in San Ysidro?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 12* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 2.8*µg/m³ | |
✓
PM2.5 concentration in San Ysidro air currently meets 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 12 AQI US |  | 80.6° 55.4° |  11.2 mp/h |
| Tuesday, Apr 30 | Good 14 AQI US | | 84.2° 57.2° | 13.4 mp/h |
| Wednesday, May 1 | Good 13 AQI US | | 84.2° 59° | 22.4 mp/h |
| Thursday, May 2 | Good 14 AQI US | | 82.4° 57.2° | 20.1 mp/h |
| Friday, May 3 | Good 8 AQI US |  | 80.6° 55.4° | 13.4 mp/h |
| Saturday, May 4 | Moderate 57 AQI US  |  60% | 84.2° 62.6° | 15.7 mp/h |
| Sunday, May 5 | Moderate 72 AQI US | | 86° 60.8° | 8.9 mp/h |
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News
The latest air quality news and resources.
Where is the cleanest air quality in San Ysidro?
No locations are available.
AQI US, Metric