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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
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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 | 55.4°F |
| Humidity | 87% |
| Wind | 4 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Georgetown, Texas | 110 |
| 2 | Boerne, Texas | 107 |
| 3 | Lewisville, Texas | 97 |
| 4 | Dallas, Texas | 95 |
| 5 | Denton, Texas | 94 |
| 6 | Round Rock, Texas | 94 |
| 7 | Austin, Texas | 92 |
| 8 | Fort Worth, Texas | 92 |
| 9 | San Antonio, Texas | 91 |
| 10 | Corpus Christi, Texas | 90 |
(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 | 13 |
| 2 | East Barham Drive | 12 |
| 3 | CSUSM COMMONS | 11 |
(local time)
SEE WORLD AQI RANKING
US AQI
12
live AQI index
Good
Overview
What is the current air quality in San Marcos?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 12 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 2.2µg/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 |
|---|---|---|---|---|
| Sunday, May 19 | Good 9 AQI US | | 66.2° 51.8° |  11.2 mp/h |
| Monday, May 20 | Good 16 AQI US |  | 68° 53.6° | 11.2 mp/h |
| Tuesday, May 21 | Good 16 AQI US | | 68° 53.6° | 8.9 mp/h |
| Today | Good 12 AQI US | | 68° 53.6° | 8.9 mp/h |
| Thursday, May 23 | Good 37 AQI US | | 66.2° 53.6° | 11.2 mp/h |
| Friday, May 24 | Good 44 AQI US | | 64.4° 55.4° | 13.4 mp/h |
| Saturday, May 25 | Good 22 AQI US |  50% | 60.8° 55.4° | 8.9 mp/h |
| Sunday, May 26 | Good 23 AQI US | | 66.2° 55.4° | 8.9 mp/h |
| Monday, May 27 | Good 25 AQI US |  | 71.6° 53.6° | 8.9 mp/h |
| Tuesday, May 28 | Good 42 AQI US | | 73.4° 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
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