Air quality in San Marcos
Air quality index (AQI⁺) and PM2.5 air pollution in San Marcos • 11 Followers • 03:00, Nov 09 Local time
38*
US AQI⁺Good
Main pollutant:
PM2.5
7 µg/m³
22°
2 km/h
99 %
Hourly forecast
San Marcos air quality index (AQI⁺) forecast
Daily forecast
San Marcos air quality index (AQI⁺) forecast
| Today | 39 | 27° 22° | 3 km/h | 90% | |
| Tue | 53 | 29° 21° | 5 km/h | 86% | |
| Wed | 58 | 30° 22° | 6 km/h | 87% |
Air pollutants
What is the current air quality in San Marcos?
PM2.5 concentration is currently 1.4 times the World Health Organization annual PM2.5 guideline value.
Health recommendations
Enjoy outdoor activities |
Open your windows to bring clean, fresh air indoors Get a monitor |
Protect yourself from air pollution in San Marcos
Health recommendations
Enjoy outdoor activities |
Open your windows to bring clean, fresh air indoors Get a monitor |
Protect yourself from air pollution in San Marcos
Most polluted locations near San Marcos
Worldwide AQI⁺ rankingHistoric air quality near San Marcos
History
Historic air quality graph for San Marcos
Historic air quality near San Marcos
History
Historic air quality graph for San Marcos












