AddAir quality in San Mateo
Air quality index (AQI⁺) and PM2.5 air pollution in San Mateo • 05:00, May 17 Local time
65
US AQI⁺Moderate
Main pollutant:
PM10
84 µg/m³
25°
5 km/h
77 %
Hourly forecast
San Mateo air quality index (AQI⁺) forecast
Daily forecast
San Mateo air quality index (AQI⁺) forecast
| Today | 65 |  | 34° 26° |  9 km/h | 60% |
| Mon | 62 |  | 33° 25° | 14 km/h | 59% |
| Tue | 59 | | 34° 26° | 15 km/h | 54% |
Air pollutants
What is the current air quality in San Mateo?
PM2.5 concentration currently meets the WHO annual PM2.5 guideline.
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 Mateo
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.
Medical grade air purifiers
Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.
Powerful, stylish air purifiers
Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.
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 Mateo
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.
Medical grade air purifiers
Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.
Powerful, stylish air purifiers
Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.
Most polluted locations near San Mateo
Worldwide AQI⁺ ranking
Station ranking
Real-time AQI⁺ station ranking for stations in San Mateo
Historic air quality near San Mateo
History
Historic air quality graph for San Mateo
Historic air quality near San Mateo
History
Historic air quality graph for San Mateo
Most polluted locations near San Mateo
Worldwide AQI⁺ rankingStation ranking
