San Marcos
1 monitoring stations · readings from 52 to 52
Average AQI
Air quality in San Marcos
Air quality in San Marcos is currently 52 on the AQI scale, which falls in the Moderate band. That number is the average across every monitoring station reporting in San Marcos right now.
We aggregate 1 station across San Marcos. All reporting stations are currently reading 52.
San Marcos breaks down into 1 stations you can open individually.
Readings refresh hourly from the official monitoring networks we track. Conditions can change quickly, so check back before planning time outdoors.
What to do at moderate levels
Outdoor activity
Fine for most people. If you are planning a long or intense session outdoors, the early morning is usually cleaner.
Sensitive groups
Unusually sensitive people may notice mild irritation. Keep reliever medication to hand if you use it.
Indoor air
Ventilating is still worthwhile. Consider closing up during traffic peaks if you live on a busy road.
Stations in San Marcos
About San Marcos
Coordinates
29.862, -97.929
Centroid of monitored stations
Stations
1
Reporting in this area
Spread
52 – 52
Cleanest to worst station reading
San Marcos air quality, answered
San Marcos is currently reading an AQI of 52, which is Moderate. It is the average across 1 reporting station.
Fine for most people. If you are planning a long or intense session outdoors, the early morning is usually cleaner. Unusually sensitive people may notice mild irritation. Keep reliever medication to hand if you use it.
52 sits in the Moderate band of the air quality index. The index runs from 0 to 500, and the lower the number the cleaner the air.
We currently aggregate 1 station in San Marcos.
Hourly. We pull from the official monitoring networks that publish for this city, and this page refreshes on the same cadence.
See San Marcos on the map.
Every station around it, live — or find out what today's reading means for you personally.