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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 | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in San Marcos?
| Weather | Mist |
| Temperature | 59°F |
| Humidity | 76% |
| Wind | 9.2 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Palm Desert, California | 139 |
| 2 | South Gate, California | 106 |
| 3 | Boerne, Texas | 92 |
| 4 | San Antonio, Texas | 73 |
| 5 | Indio, California | 72 |
| 6 | Fort Worth, Texas | 70 |
| 7 | Aiken, South Carolina | 67 |
| 8 | Lewisville, Texas | 66 |
| 9 | Athens, Georgia | 65 |
| 10 | Denton, 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 | CSUSM COMMONS | 6 |
| 2 | East Barham Drive | 5 |
| 3 | Tucana Drive | 1 |
(local time)
SEE WORLD AQI RANKING
US AQI
5
live AQI index
Good
Overview
What is the current air quality in San Marcos?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 5 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 1.3µg/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 |
|---|---|---|---|---|
| Tuesday, Apr 23 | Good 4 AQI US |  | 64.4° 55.4° |  11.2 mp/h |
| Wednesday, Apr 24 | Good 5 AQI US |  | 62.6° 53.6° | 11.2 mp/h |
| Thursday, Apr 25 | Good 4 AQI US |  | 60.8° 53.6° | 11.2 mp/h |
| Today | Good 5 AQI US | | 60.8° 53.6° | 11.2 mp/h |
| Saturday, Apr 27 | Good 15 AQI US |  | 66.2° 53.6° | 11.2 mp/h |
| Sunday, Apr 28 | Good 22 AQI US | | 68° 51.8° | 8.9 mp/h |
| Monday, Apr 29 | Good 29 AQI US | | 69.8° 53.6° | 11.2 mp/h |
| Tuesday, Apr 30 | Good 34 AQI US | | 68° 53.6° | 8.9 mp/h |
| Wednesday, May 1 | Good 26 AQI US | | 68° 53.6° | 8.9 mp/h |
| Thursday, May 2 | Good 31 AQI US | | 71.6° 53.6° | 8.9 mp/h |
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News
The latest air quality news and resources.
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