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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 | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Weather
What is the current weather in San Ysidro?
| Weather | Clear sky |
| Temperature | 75.2°F |
| Humidity | 14% |
| Wind | 6.9 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | San Gabriel, California | 96 |
| 2 | West Carson, California | 94 |
| 3 | Visalia, California | 86 |
| 4 | Catonsville, Maryland | 85 |
| 5 | Compton, California | 84 |
| 6 | Monrovia, California | 84 |
| 7 | Carson, California | 82 |
| 8 | Monterey Park, California | 82 |
| 9 | Alhambra, California | 80 |
| 10 | Redondo Beach, California | 80 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
15*
live AQI index
Good
Overview
What is the current air quality in San Ysidro?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 15* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 3.6*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 15 AQI US | | 86° 59° |  13.4 mp/h |
| Friday, Apr 19 | Good 8 AQI US |  | 86° 62.6° | 17.9 mp/h |
| Saturday, Apr 20 | Good 19 AQI US | | 82.4° 59° | 17.9 mp/h |
| Sunday, Apr 21 | Good 36 AQI US |  | 77° 53.6° | 8.9 mp/h |
| Monday, Apr 22 | Good 44 AQI US | | 82.4° 57.2° | 8.9 mp/h |
| Tuesday, Apr 23 | Moderate 51 AQI US  | | 84.2° 60.8° | 17.9 mp/h |
| Wednesday, Apr 24 | Good 13 AQI US | | 78.8° 62.6° | 15.7 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