San Marcos, Texas Air Quality
Real-time air quality index (AQI) and pollution data
Population: 72,811 • County: Hays
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Quick Facts
| Current AQI | 50 — Good |
| Air Quality Grade | N/A |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
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Last 30 Days
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Current Pollutant Levels
PM2.5
50
Good
Real-time data from EPA AirNow
Frequently Asked Questions About San Marcos Air Quality
What is the air quality in San Marcos today?
The current AQI in San Marcos is 50, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Air Quality Grade
N/A
Better than 0% of US cities
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