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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
AIR QUALITY DATA CONTRIBUTORS
Texas Commission on Environmental Quality (TCEQ)
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Pollen
What is the pollen count in San Marcos today?
 | Index | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Weather
What is the current weather in San Marcos?
| Weather | Broken clouds |
| Temperature | 71.6°F |
| Humidity | 91% |
| Wind | 3.4 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Porterville, California | 110 |
| 2 | Three Rivers, California | 82 |
| 3 | Palm Desert, California | 77 |
| 4 | Bakersfield, California | 74 |
| 5 | Springville, California | 72 |
| 6 | Visalia, California | 72 |
| 7 | Bethlehem, Pennsylvania | 70 |
| 8 | Lewisville, Texas | 70 |
| 9 | Charlottesville, Virginia | 65 |
| 10 | The Woodlands, Texas | 65 |
(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 | CAPCOG San Marcos Staples Road | 38 |
(local time)
SEE WORLD AQI RANKING
US AQI
38
live AQI index
Good
Overview
What is the current air quality in San Marcos?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 38 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 9.3µg/m³ | |
!
PM2.5
x1.9
PM2.5 concentration in San Marcos is currently 1.9 times 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 |
|---|---|---|---|---|
| Monday, Apr 15 | Good 50 AQI US |  | 77° 68° |  15.7 mp/h |
| Tuesday, Apr 16 | Moderate 53 AQI US  | | 80.6° 69.8° | 13.4 mp/h |
| Wednesday, Apr 17 | Good 39 AQI US | | 91.4° 69.8° | 15.7 mp/h |
| Today | Good 38 AQI US | 90% | 91.4° 69.8° | 15.7 mp/h |
| Friday, Apr 19 | Good 43 AQI US | 90% | 77° 62.6° | 13.4 mp/h |
| Saturday, Apr 20 | Good 49 AQI US | 80% | 75.2° 64.4° | 13.4 mp/h |
| Sunday, Apr 21 | Good 41 AQI US | 90% | 68° 57.2° | 15.7 mp/h |
| Monday, Apr 22 | Good 39 AQI US | | 73.4° 55.4° | 8.9 mp/h |
| Tuesday, Apr 23 | Good 38 AQI US | 40% | 78.8° 59° | 11.2 mp/h |
| Wednesday, Apr 24 | Moderate 74 AQI US | 40% | 80.6° 66.2° | 8.9 mp/h |
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News
The latest air quality news and resources.
San Marcos air quality data attribution
1Contributor
Government Contributor
2 Data sources
Where is the cleanest air quality in San Marcos?
AQI US, Metric