Air Quality Lab — Trieste, Italy
Air Quality Profile
Trieste reports an annual PM2.5 of 12.1 µg/m³. That's roughly double the WHO 2021 guideline but still far below the EU annual limit of 25 µg/m³.
Trieste
Italy
ItalyAnnual Average
FairWHO annual classification
12.1µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1616 µg/m³ — Moderate
1818 µg/m³ — Moderate
1414 µg/m³ — Fair
1010 µg/m³ — Fair
8.68.6 µg/m³ — Good
9.29.2 µg/m³ — Good
1010 µg/m³ — Fair
9.09.0 µg/m³ — Good
1010 µg/m³ — Good
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1414 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
1616 µg/m³ — Moderate
1818 µg/m³ — Moderate
1414 µg/m³ — Fair
1010 µg/m³ — Fair
8.68.6 µg/m³ — Good
9.29.2 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
1010 µg/m³ — Fair
9.09.0 µg/m³ — Good
1010 µg/m³ — Good
1212 µg/m³ — Fair
1313 µg/m³ — Fair
1414 µg/m³ — Fair
Best months: May–Jun, AugWorst months: Jan–Feb, Dec
Good5–10 µg/m³Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Italy
Trieste: 12.1 µg/m³. Typical range in Italy: 10.7–13.9 µg/m³. Low anchor: Cagliari, 9.5 µg/m³. High anchor: Milan, 19.8 µg/m³.
436 cities tracked