AddAir quality in San Mateo
Air quality index (AQI⁺) and PM2.5 air pollution in San Mateo • 13 Followers • 20:00, Sep 20 Local time
77
US AQI⁺Moderate
Main pollutant:
PM2.5
23 µg/m³
26°
6 km/h
88 %
Hourly forecast
San Mateo air quality index (AQI⁺) forecast
Daily forecast
San Mateo air quality index (AQI⁺) forecast
| Today | 70 |  | 31° 25° |  14 km/h | 74% |
| Mon | 62 | | 31° 25° | 15 km/h | 73% |
| Tue | 61 |  90% | 30° 25° | 14 km/h | 75% |
Air pollutants
What is the current air quality in San Mateo?
PM2.5 concentration is currently 4.6 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 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.
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
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.
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 Mateo
Worldwide AQI⁺ ranking
Station ranking
Real-time AQI⁺ station ranking for stations in San Mateo
City ranking
Real-time Philippines AQI⁺ city ranking
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
Real-time AQI⁺ station ranking for stations in San Mateo
City ranking
Real-time Philippines AQI⁺ city ranking
Measure your own air quality
Get a monitor and contribute air quality data in your city.
