Air quality in San Mateo
Air quality index (AQI⁺) and PM2.5 air pollution in San Mateo • 14:00, May 09 Local time
29
US AQI⁺Good
Main pollutant:
PM2.5
5.2 µg/m³
37°
9 km/h
31 %
Hourly forecast
San Mateo air quality index (AQI⁺) forecast
Daily forecast
San Mateo air quality index (AQI⁺) forecast
| Today | 36 | 38° 26° | 21 km/h | 45% | |
| Sun | 44 | 38° 26° | 20 km/h | 42% | |
| Mon | 55 | 37° 26° | 23 km/h | 48% |
Air pollutants
What is the current air quality in San Mateo?
PM2.5 concentration currently meets the WHO annual PM2.5 guideline.
Health recommendations
Enjoy outdoor activities |
Open your windows to bring clean, fresh air indoors Get a monitor |
Protect yourself from air pollution in San Mateo
Health recommendations
Enjoy outdoor activities |
Open your windows to bring clean, fresh air indoors Get a monitor |
Protect yourself from air pollution in San Mateo
Most polluted locations near San Mateo
Worldwide AQI⁺ rankingHistoric 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












