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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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Weather
What is the current weather in San Marcos?
| Weather | Clear sky |
| Temperature | 84.2°F |
| Humidity | 70% |
| Wind | 15 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Mecca, California | 79 |
| 2 | Campo, California | 72 |
| 3 | Pahrump, Nevada | 69 |
| 4 | Beaver, Pennsylvania | 68 |
| 5 | Yucaipa, California | 66 |
| 6 | New Brighton, Pennsylvania | 65 |
| 7 | Oak Hills, California | 65 |
| 8 | Aliquippa, Pennsylvania | 64 |
| 9 | Monaca, Pennsylvania | 64 |
| 10 | Lubbock, Texas | 63 |
(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 | 37 |
(local time)
SEE WORLD AQI RANKING
US AQI
37
live AQI index
Good
Overview
What is the current air quality in San Marcos?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 37 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 6.8µg/m³ | |
| O3 | 44µg/m³ | |
!
PM2.5
x1.4
PM2.5 concentration in San Marcos is currently 1.4 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in San Marcos?
 | Enjoy outdoor activities |
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Forecast
San Marcos air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Thursday, May 30 | Good 43 AQI US |  | 89.6° 64.4° |  15.7 mp/h |
| Friday, May 31 | Moderate 55 AQI US  | | 89.6° 69.8° | 11.2 mp/h |
| Saturday, Jun 1 | Moderate 65 AQI US | | 93.2° 73.4° | 17.9 mp/h |
| Today | Good 37 AQI US | 40% | 95° 73.4° | 17.9 mp/h |
| Monday, Jun 3 | Moderate 59 AQI US | 90% | 102.2° 73.4° | 20.1 mp/h |
| Tuesday, Jun 4 | Moderate 65 AQI US |  | 100.4° 73.4° | 15.7 mp/h |
| Wednesday, Jun 5 | Moderate 64 AQI US | | 98.6° 75.2° | 11.2 mp/h |
| Thursday, Jun 6 | Moderate 62 AQI US | | 98.6° 73.4° | 11.2 mp/h |
| Friday, Jun 7 | Moderate 73 AQI US |  | 98.6° 71.6° | 13.4 mp/h |
| Saturday, Jun 8 | Moderate 80 AQI US |  | 100.4° 71.6° | 13.4 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