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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 | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in San Marcos?
| Weather | Broken clouds |
| Temperature | 73.4°F |
| Humidity | 83% |
| Wind | 10.4 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Mecca, California | 107 |
| 2 | Lone Pine, California | 86 |
| 3 | Pioneer, California | 78 |
| 4 | Keeler, California | 76 |
| 5 | Pahrump, Nevada | 76 |
| 6 | Coachella, California | 61 |
| 7 | Olancha, California | 58 |
| 8 | Oklahoma City, Oklahoma | 57 |
| 9 | Ann Arbor, Michigan | 55 |
| 10 | Corpus Christi, Texas | 55 |
(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 | 33 |
(local time)
SEE WORLD AQI RANKING
US AQI
33
live AQI index
Good
Overview
What is the current air quality in San Marcos?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 33 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 8µg/m³ | |
| O3 | 52µg/m³ | |
!
PM2.5
x1.6
PM2.5 concentration in San Marcos is currently 1.6 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 |
|---|---|---|---|---|
| Wednesday, May 1 | Good 36 AQI US |  | 80.6° 69.8° |  11.2 mp/h |
| Thursday, May 2 | Good 39 AQI US | | 78.8° 69.8° | 15.7 mp/h |
| Friday, May 3 | Good 31 AQI US | | 80.6° 69.8° | 13.4 mp/h |
| Today | Good 33 AQI US | 100% | 82.4° 69.8° | 15.7 mp/h |
| Sunday, May 5 | Good 42 AQI US | | 89.6° 69.8° | 13.4 mp/h |
| Monday, May 6 | Good 46 AQI US | | 91.4° 69.8° | 13.4 mp/h |
| Tuesday, May 7 | Moderate 63 AQI US  | | 96.8° 71.6° | 11.2 mp/h |
| Wednesday, May 8 | Moderate 66 AQI US | | 84.2° 71.6° | 17.9 mp/h |
| Thursday, May 9 | Moderate 72 AQI US | | 77° 62.6° | 22.4 mp/h |
| Friday, May 10 | Good 27 AQI US | | 77° 55.4° | 11.2 mp/h |
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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