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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 | Low | |
 | Grass pollen | Moderate | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in San Marcos?
| Weather | Scattered clouds |
| Temperature | 80.6°F |
| Humidity | 61% |
| Wind | 6.9 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Corpus Christi, Texas | 96 |
| 2 | Claremont, California | 68 |
| 3 | Kennewick, Washington | 67 |
| 4 | La Verne, California | 67 |
| 5 | Hollywood, California | 66 |
| 6 | Lubbock, Texas | 65 |
| 7 | San Fernando, California | 65 |
| 8 | Sierra Madre, California | 65 |
| 9 | Monrovia, California | 64 |
| 10 | San Gabriel, California | 64 |
(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
Spotlight
Lockhart has "Unhealthy for Sensitive Groups" air quality. See the map and health recommendations.
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 | O3 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 6.1µg/m³ | |
| O3 | 94µg/m³ | |
!
PM2.5
x1.2
PM2.5 concentration in San Marcos is currently 1.2 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 |
|---|---|---|---|---|
| Saturday, May 25 | Moderate 89 AQI US  | | 95° 75.2° |  13.4 mp/h |
| Sunday, May 26 | Moderate 98 AQI US |  | 98.6° 77° | 20.1 mp/h |
| Monday, May 27 | Moderate 86 AQI US | | 96.8° 69.8° | 26.8 mp/h |
| Today | Good 38 AQI US | 100% | 86° 68° | 13.4 mp/h |
| Wednesday, May 29 | Moderate 55 AQI US | 40% | 93.2° 75.2° | 17.9 mp/h |
| Thursday, May 30 | Moderate 55 AQI US | 100% | 98.6° 73.4° | 15.7 mp/h |
| Friday, May 31 | Moderate 54 AQI US | 100% | 93.2° 68° | 11.2 mp/h |
| Saturday, Jun 1 | Moderate 61 AQI US | 50% | 95° 75.2° | 17.9 mp/h |
| Sunday, Jun 2 | Moderate 66 AQI US | | 96.8° 75.2° | 17.9 mp/h |
| Monday, Jun 3 | Moderate 63 AQI US | | 102.2° 75.2° | 17.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
San Marcos air quality data attribution
1Contributor
Government Contributor
2 Data sources
Where is the cleanest air quality in San Marcos?
AQI US, Metric