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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 |
Source: tomorrow.io
Weather
What is the current weather in San Ysidro?
| Weather | Clear sky |
| Temperature | 69.8°F |
| Humidity | 11% |
| Wind | 10.4 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Mecca, California | 88 |
| 2 | Mission, Texas | 86 |
| 3 | Campo, California | 84 |
| 4 | Corpus Christi, Texas | 83 |
| 5 | Detroit, Michigan | 81 |
| 6 | Lubbock, Texas | 78 |
| 7 | Pahrump, Nevada | 75 |
| 8 | Michigan City, Indiana | 69 |
| 9 | Baytown, Texas | 66 |
| 10 | Muskegon, Michigan | 64 |
(local time)
SEE WORLD AQI RANKING
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US AQI
25*
live AQI index
Good
Overview
What is the current air quality in San Ysidro?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 25* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.6*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 25 AQI US |  | 91.4° 62.6° |  22.4 mp/h |
| Tuesday, Jun 4 | Good 50 AQI US |  | 93.2° 62.6° | 15.7 mp/h |
| Wednesday, Jun 5 | Good 50 AQI US | | 98.6° 68° | 8.9 mp/h |
| Thursday, Jun 6 | Moderate 60 AQI US  | | 102.2° 73.4° | 8.9 mp/h |
| Friday, Jun 7 | Moderate 72 AQI US |  | 104° 75.2° | 17.9 mp/h |
| Saturday, Jun 8 | Moderate 66 AQI US | | 100.4° 71.6° | 13.4 mp/h |
| Sunday, Jun 9 | Moderate 64 AQI US | | 100.4° 71.6° | 20.1 mp/h |
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News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in San Ysidro?
No locations are available.
AQI US, Metric