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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 | Very high | |
 | Tree pollen | Very high | |
 | 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 | 17% |
| Wind | 11.5 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Palm Desert, California | 175 |
| 2 | Conway, South Carolina | 73 |
| 3 | Pahrump, Nevada | 72 |
| 4 | Indio, California | 66 |
| 5 | Rock Hill, South Carolina | 64 |
| 6 | Decatur, Georgia | 61 |
| 7 | Marietta, Georgia | 60 |
| 8 | Kansas City, Kansas | 58 |
| 9 | Athens, Georgia | 57 |
| 10 | Champaign, Illinois | 57 |
(local time)
SEE WORLD AQI RANKING
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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 |  | 77° 60.8° |  31.3 mp/h |
| Friday, Apr 26 | Good 14 AQI US | | 77° 51.8° | 26.8 mp/h |
| Saturday, Apr 27 | Good 14 AQI US | | 69.8° 51.8° | 29.1 mp/h |
| Sunday, Apr 28 | Good 10 AQI US |  | 75.2° 48.2° | 20.1 mp/h |
| Monday, Apr 29 | Good 7 AQI US | | 80.6° 55.4° | 11.2 mp/h |
| Tuesday, Apr 30 | Good 10 AQI US |  | 87.8° 59° | 11.2 mp/h |
| Wednesday, May 1 | Good 45 AQI US |  30% | 87.8° 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