Rendered: 2026-04-14 19:32:06 — Live data will load from client
Recommendations are indicative. Consult local advisories if you have health concerns.
Get the latest air quality in San marcos (78666), including PM2.5, PM10, O₃, CO, NO₂, and SO₂ data. This dashboard shows the current AQI and 7-day weather forecast for San marcos, TX. Learn about pollution levels, humidity, wind, and temperature trends to make informed outdoor activity decisions.
Updated daily using real-time data from Open-Meteo. Check this page regularly for live air pollution updates in San marcos and surrounding areas.
San antonio (78203) , San antonio (78239) , Ottine (78658) , Austin (78741) , San antonio (78204) , San antonio (78237) , San antonio (78258) , Austin (78726) ,