Air Quality in Siena, Italy
Drizzle
15.3°C · 79.5% humidity
15.3°
Feels 15.3°
37
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Siena's air quality — share it
AQI Forecast
34
1am
34
34
37
4am
34
34
34
7am
27
27
27
10am
27
27
27
1pm
27
27
27
4pm
27
27
27
7pm
27
27
27
10pm
34
34
Siena's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.
79.5%
Humidity
13.1 km/h
Wind SW
1015.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
8.9 µg/m³
PM10▲
41.15 µg/m³
050100150200300500
What is the weather forecast for Siena?
Temperature & Precipitation
PM2.58.9 µg/m³
✓ WHO
Good
PM1041.15 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Siena?
06-09
28.2° 15.3°
0.19 mm
06-10
31.9° 16.2°
06-11
30.1° 18.0°
06-12
31.9° 17.4°
06-13
32.3° 13.8°
0.75 mm
06-14
35.5° 17.6°
06-15
36.1° 14.6°
Both models agree
Avg diff: 2.5°C
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T02:02 UTC.