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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 | 60.8°F |
| Humidity | 13% |
| Wind | 9.2 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Palm Desert, California | 104 |
| 2 | Pahrump, Nevada | 82 |
| 3 | Boerne, Texas | 81 |
| 4 | Mecca, California | 81 |
| 5 | Birmingham, Alabama | 78 |
| 6 | Deschutes River Woods, Oregon | 75 |
| 7 | Corpus Christi, Texas | 73 |
| 8 | Coachella, California | 71 |
| 9 | Yucaipa, California | 70 |
| 10 | Campo, California | 68 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
33*
live AQI index
Good
Overview
What is the current air quality in San Ysidro?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 33* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 6*µg/m³ | |
!
PM2.5
x1.2
PM2.5 concentration in San Ysidro is currently 1.2 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 33 AQI US |  | 87.8° 59° |  24.6 mp/h |
| Friday, May 24 | Moderate 53 AQI US  | | 87.8° 59° | 20.1 mp/h |
| Saturday, May 25 | Good 44 AQI US | | 87.8° 59° | 26.8 mp/h |
| Sunday, May 26 | Good 29 AQI US | | 87.8° 57.2° | 24.6 mp/h |
| Monday, May 27 | Good 15 AQI US | | 93.2° 59° | 11.2 mp/h |
| Tuesday, May 28 | Good 27 AQI US | | 95° 64.4° | 22.4 mp/h |
| Wednesday, May 29 | Good 22 AQI US | | 93.2° 62.6° | 24.6 mp/h |
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Where is the cleanest air quality in San Ysidro?
No locations are available.
AQI US, Metric