Siena · Toscana
Air quality: 2022 · Land consumption: 2024
PM2.5
13,8
μg/m³ (WHO: 5)
PM10
22,5
μg/m³ (WHO: 15)
NO₂
28,4
μg/m³ (WHO: 10)
Land consumption
12,3%
of territory
The bar shows the measured value relative to twice the WHO limit (vertical line). Red = exceeds limit.
Source: ISPRA. Reference limits: WHO air quality guidelines (AQG 2021).
Consumed percentage
12,3%
out of 118,5 km² total
Consumed area
1453 ha
sealed hectares
Source: ISPRA — Land Consumption Report in Italy.