AddAir quality in Siena
Air quality index (AQI⁺) and PM2.5 air pollution in Siena • 9K Followers • 14:00, Sep 19 Local time
32*
US AQI⁺Good
Main pollutant:
PM2.5
5.8 µg/m³
26°
6 km/h
54 %
Hourly forecast
Siena air quality index (AQI⁺) forecast
Daily forecast
Siena air quality index (AQI⁺) forecast
| Today | 30 |  | 26° 17° |  6 km/h | 68% |
| Sun | 52 |  | 28° 15° | 8 km/h | 63% |
| Mon | 56 | | 28° 15° | 9 km/h | 61% |
Air pollutants
What is the current air quality in Siena?
PM2.5 concentration is currently 1.2 times the World Health Organization annual PM2.5 guideline value.
Health recommendations
 Enjoy outdoor activities |
 Open your windows to bring clean, fresh air indoors Get a monitor |
Protect yourself from air pollution in Siena
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 Siena today?
Index
None
 Tree None | 0% |
 Grass None | 0% |
 Weed None | 0% |
Source:
Open-Meteo.comHealth recommendations
Enjoy outdoor activities |
Open your windows to bring clean, fresh air indoors Get a monitor |
Pollen
What is the pollen count in Siena today?
Index
None
Tree None | 0% |
Grass None | 0% |
Weed None | 0% |
Source:
Open-Meteo.comProtect yourself from air pollution in Siena
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 Siena
Worldwide AQI⁺ ranking
Historic air quality near Siena
History
Historic air quality graph for Siena
Historic air quality near Siena
History
Historic air quality graph for Siena
Most polluted locations near Siena
Worldwide AQI⁺ ranking
