AddAir quality in San Marcos
Air quality index (AQI⁺) and PM2.5 air pollution in San Marcos • 4 Followers • 04:00, Sep 27 Local time
52*
US AQI⁺Moderate
Main pollutant:
PM2.5
9.9 µg/m³
16°
11 km/h
80 %
Hourly forecast
San Marcos air quality index (AQI⁺) forecast
Daily forecast
San Marcos air quality index (AQI⁺) forecast
| Today | 56 |  | 24° 16° |  13 km/h | 52% |
| Mon | 59 |  | 24° 14° | 12 km/h | 55% |
| Tue | 57 | | 25° 15° | 13 km/h | 62% |
Air pollutants
What is the current air quality in San Marcos?
PM2.5 concentration is currently 2 times the World Health Organization annual PM2.5 guideline value.
Health recommendations
 Sensitive groups should reduce outdoor exercise |
 Close your windows to avoid dirty outdoor air Get a monitor |
 Sensitive groups should wear a mask outdoors Get a mask |
 Sensitive groups should run an air purifier Get an air purifier |
Protect yourself from air pollution in San Marcos
Air Purifiers
Face Masks
Air Quality Monitors
Health recommendations
Sensitive groups should reduce outdoor exercise |
Close your windows to avoid dirty outdoor air Get a monitor |
Sensitive groups should wear a mask outdoors Get a mask |
Sensitive groups should run an air purifier Get an air purifier |
Protect yourself from air pollution in San Marcos
Air Purifiers
Face Masks
Air Quality Monitors
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
