AddAir quality in San Marcos
Air quality index (AQI⁺) and PM2.5 air pollution in San Marcos • 13 Followers • 04:00, Oct 29 Local time
43*
US AQI⁺Good
Main pollutant:
PM2.5
7.8 µg/m³
12°
3 km/h
90 %
Hourly forecast
San Marcos air quality index (AQI⁺) forecast
Daily forecast
San Marcos air quality index (AQI⁺) forecast
| Today | 49 |  | 19° 13° |  12 km/h | 68% |
| Fri | 52 | | 22° 12° | 21 km/h | 67% |
| Sat | 55 |  | 21° 12° | 18 km/h | 61% |
Air pollutants
What is the current air quality in San Marcos?
PM2.5 concentration is currently 1.6 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
Monitor the air you breathe
Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.
Filtration for air conditioners
A cut-to-fit filtration for air conditioning systems, LifeShield Lite helps reduce dust in the air conditioner while capturing indoor air pollutants.
Sustainable, smart air purifiers
Elegantly designed using sustainably sourced beech wood, the Atem Earth delivers medical-grade filtration by capturing ultrafine particles with HyperHEPA technology.
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
Monitor the air you breathe
Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.
Filtration for air conditioners
A cut-to-fit filtration for air conditioning systems, LifeShield Lite helps reduce dust in the air conditioner while capturing indoor air pollutants.
Sustainable, smart air purifiers
Elegantly designed using sustainably sourced beech wood, the Atem Earth delivers medical-grade filtration by capturing ultrafine particles with HyperHEPA technology.
Most polluted locations near San Marcos
Worldwide AQI⁺ ranking
Historic 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
Most polluted locations near San Marcos
Worldwide AQI⁺ ranking
