Your Local Air Quality
For San Marcos, TX 78666
Date
Code
AQI Level
Major Pollutant
Date
Code
AQI Level
Major Pollutant
3/23/2010
N/A
Ozone
3/23/2010
N/A
Large Particulate Matter
3/23/2010
N/A
Small Particulate Matter
3/24/2010
N/A
Ozone
3/24/2010
N/A
Large Particulate Matter
3/24/2010
N/A
Small Particulate Matter
| Air Quality Index (AQI) Scale | ||
| AQI Color | AQI Category | AQI Numbers |
| Good | 0-50 | |
| Moderate | 51-100 | |
| Unhealthy for Sensitive Groups | 101-150 | |
| Unhealthy | 151-200 | |
| Very Unhealthy | 201-300 | |
| Hazardous | 301-500+ | |
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