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Air quality in San Marcos
Air quality index (AQI) and PM2.5 air pollution in San Marcos
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San Marcos Air Quality Map
Real-time San Marcos air pollution map
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Weather
What is the current weather in San Marcos?
| Weather | Broken clouds |
| Temperature | 64.4°F |
| Humidity | 72% |
| Wind | 9.2 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Galena Park, Texas | 91 |
| 2 | Indio, California | 90 |
| 3 | The Woodlands, Texas | 82 |
| 4 | Mecca, California | 81 |
| 5 | Channelview, Texas | 74 |
| 6 | Baytown, Texas | 72 |
| 7 | Camden, New Jersey | 70 |
| 8 | Corpus Christi, Texas | 70 |
| 9 | Houston, Texas | 70 |
| 10 | Pasadena, Texas | 70 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live San Marcos aqi ranking
Real-time San Marcos air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Tucana Drive | 28 |
| 2 | CSUSM COMMONS | 11 |
| 3 | East Barham Drive | 6 |
(local time)
SEE WORLD AQI RANKING
US AQI
11
live AQI index
Good
Overview
What is the current air quality in San Marcos?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 11 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 2µg/m³ | |
✓
PM2.5 concentration in San Marcos air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in San Marcos?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
San Marcos air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 15 | Good 13 AQI US |  | 66.2° 55.4° |  11.2 mp/h |
| Thursday, May 16 | Good 10 AQI US | | 68° 55.4° | 8.9 mp/h |
| Friday, May 17 | Good 10 AQI US | | 68° 55.4° | 11.2 mp/h |
| Today | Good 11 AQI US |  | 68° 53.6° | 11.2 mp/h |
| Sunday, May 19 | Good 43 AQI US | | 64.4° 53.6° | 11.2 mp/h |
| Monday, May 20 | Good 36 AQI US | | 68° 53.6° | 8.9 mp/h |
| Tuesday, May 21 | Good 35 AQI US | | 69.8° 53.6° | 8.9 mp/h |
| Wednesday, May 22 | Moderate 57 AQI US  |  20% | 64.4° 55.4° | 13.4 mp/h |
| Thursday, May 23 | Good 36 AQI US | | 66.2° 55.4° | 11.2 mp/h |
| Friday, May 24 | Good 25 AQI US | | 66.2° 51.8° | 11.2 mp/h |
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News
The latest air quality news and resources.
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San Marcos air quality data attribution
3Contributors
- 3 Anonymous contributors
3 stations
3 Anonymous Contributors
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in San Marcos?
AQI US, Metric