AddAir quality in San Mateo County
Air quality index (AQI⁺) and PM2.5 air pollution in San Mateo County • 15 Followers • 12:00, May 23 Local time
18
US AQI⁺Good
Main pollutant:
PM2.5
3.3 µg/m³
13°
19 km/h
98 %
Hourly forecast
San Mateo County air quality index (AQI⁺) forecast
Daily forecast
San Mateo County air quality index (AQI⁺) forecast
| Today | 18 |  90% | 13° 9° |  23 km/h | 98% |
| Sun | 36 | 90% | 13° 9° | 20 km/h | 98% |
| Mon | 26 | 90% | 14° 8° | 21 km/h | 94% |
Air pollutants
What is the current air quality in San Mateo County?
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 County
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.
Pollen
What is the pollen count in San Mateo County today?
Index
Moderate
 Tree Low | 25% |
 Grass Low | 25% |
 Weed Moderate | 50% |
Source:
wetter.comHealth recommendations
Enjoy outdoor activities |
Open your windows to bring clean, fresh air indoors Get a monitor |
Pollen
What is the pollen count in San Mateo County today?
Index
Moderate
Tree Low | 25% |
Grass Low | 25% |
Weed Moderate | 50% |
Source:
wetter.comProtect yourself from air pollution in San Mateo County
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 County
Worldwide AQI⁺ ranking
Station ranking
Real-time AQI⁺ station ranking for stations in San Mateo County
Historic air quality near San Mateo County
History
Historic air quality graph for San Mateo County
Historic air quality near San Mateo County
History
Historic air quality graph for San Mateo County
Most polluted locations near San Mateo County
Worldwide AQI⁺ rankingStation ranking
Real-time AQI⁺ station ranking for stations in San Mateo County
Measure your own air quality
Get a monitor and contribute air quality data in your city.
Where is the cleanest air quality in San Mateo County?
- Experimental Facilities Dept Shops EFD7
- Filbert Road10
- Newton Drive11
- 480 Tunitas Creek Road12
- Alpine Road13
- Cerrito Avenue14
- Portola Hts - 5 Points14
- Santa Clara Avenue at Barton Street14
- West Ranch Road15
- 920 Bear Gulch Road16
- Durham Road16
- Skyline - Chapman Rd16
- Alberta Glen17
- Dirt Alpine17
- Stanford Weekend Acres17
- Ware Road17
- Old Spanish Trail18
- Ralston Road18
- Skyline Boulevard MAC18
- Talbot Avenue - East Sharp Park18
- Kings Mountain North19
- San Gregorio20
- Alexander Avenue21
- Stockbridge near Alameda22
- Los Trancos Road23
- Menlo Oaks 223
- Skyline Resort23
- 265 Old Spanish Trail24
- Arlington Way24
- Rocky Creek Road26
- Lynton Avenue28
- Palomar Park29
- Menlo Oaks30
- Kings Mountain North #234
