Air Quality Lab — Belfast, United Kingdom
Air Quality Profile
Belfast reports an annual PM2.5 of 7.0 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Belfast
United Kingdom
United KingdomAnnual Average
GoodWHO annual classification
7.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
7.87.8 µg/m³ — Good
7.87.8 µg/m³ — Good
9.09.0 µg/m³ — Good
7.87.8 µg/m³ — Good
7.47.4 µg/m³ — Good
6.46.4 µg/m³ — Good
5.95.9 µg/m³ — Good
5.55.5 µg/m³ — Good
5.55.5 µg/m³ — Good
5.65.6 µg/m³ — Good
7.97.9 µg/m³ — Good
7.67.6 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
7.87.8 µg/m³ — Good
7.87.8 µg/m³ — Good
9.09.0 µg/m³ — Good
7.87.8 µg/m³ — Good
7.47.4 µg/m³ — Good
6.46.4 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
5.95.9 µg/m³ — Good
5.55.5 µg/m³ — Good
5.55.5 µg/m³ — Good
5.65.6 µg/m³ — Good
7.97.9 µg/m³ — Good
7.67.6 µg/m³ — Good
Best months: Aug–OctWorst months: Mar–Apr, Nov
Good5–10 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across United Kingdom
Belfast: 7.0 µg/m³. Typical range in United Kingdom: 7.0–7.8 µg/m³. Low anchor: Isle of Lewis, 4.3 µg/m³. High anchor: London, 8.6 µg/m³.
494 cities tracked