AddAir quality in San Mateo County
Air quality index (AQI⁺) and PM2.5 air pollution in San Mateo County • 15 Followers • 23:00, Jun 21 Local time
19
US AQI⁺Good
Main pollutant:
PM2.5
3.5 µg/m³
13°
8 km/h
98 %
Hourly forecast
San Mateo County air quality index (AQI⁺) forecast
Daily forecast
San Mateo County air quality index (AQI⁺) forecast
| Today | 23 |  | 18° 11° |  8 km/h | 78% |
| Tue | 23 | | 21° 12° | 11 km/h | 63% |
| Wed | 43 | | 21° 11° | 14 km/h | 72% |
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 Moderate | 50% |
 Weed None | 0% |
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 Moderate | 50% |
Weed None | 0% |
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.
Learn more about global air quality
Where is the cleanest air quality in San Mateo County?
- Bear Gulch Road2
- Alexander Avenue6
- Kings Mountain North8
- Top of Kings Mountain11
- Newton Drive12
- Star Hill Road station13
- Santa Clara Avenue at Barton Street14
- Filbert Road17
- Menlo Oaks 217
- West Ranch Road17
- 480 Tunitas Creek Road18
- Dirt Alpine18
- Rocky Creek Road18
- 265 Old Spanish Trail19
- 920 Bear Gulch Road19
- Durham Road19
- Kings Mountain North #219
- Menlo Oaks19
- Ware Road19
- Palomar Park20
- Alberta Glen22
- Lynton Avenue22
- Portola Hts - 5 Points22
- Skyline Boulevard MAC22
- Stanford Weekend Acres22
- Arlington Way23
- Skyline Resort23
- Alpine Road24
- Sand Hill Road station24
- Talbot Avenue - East Sharp Park24
- Old Spanish Trail26
- Los Trancos Road28
- San Gregorio28
- Skyline - Chapman Rd28
- Stockbridge near Alameda44
