What is the air quality in Siena today?

The current Air Quality Index (AQI) in Siena is 0 (Good). PM2.5 concentration is 0.0 µg/m³.

What is the temperature in Siena right now?

The current temperature in Siena is 11.6°C (feels like 11.6°C). Humidity is 88.1% and wind speed is 40.2 km/h.

Is it safe to go outside in Siena?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0 (Low).

Air Quality in Siena, Italy

Drizzle

11.6°C · 88.1% humidity

11.6°

Feels 11.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

75 5pm

75 8pm

75 11pm

99 2am

99 5am

75 8am

50 11am

75 2pm

88.1%

Humidity

40.2 km/h

Wind SSW

1005.9 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Siena?

Temperature & Precipitation

PM2.50.0 µg/m³

Good

PM1048.05 µg/m³

Good

UV INDEX0.7

Low

What is the 7-day forecast for Siena?

04-09

14.7° 7.5°

2.25 mm

04-10

16.8° 8.7°

7.75 mm

04-11

17.0° 8.3°

04-12

15.2° 5.0°

04-13

13.7° 3.3°

0.88 mm

04-14

9.6° 7.6°

3.19 mm

04-15

13.9° 6.8°

Both models agree Avg diff: 4.9°C

What cities are near Siena?

Colle di Val d'Elsa Poggibonsi Montevarchi San Giovanni Valdarno Arezzo Scandicci Campo di Marte Florence 12 Empoli 13 San Miniato

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T20:17 UTC.