Air Quality Lab — Tuen Mun, Hong Kong
Air Quality Profile·
Tuen Mun reports an annual PM2.5 of 19.8 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Tuen Mun
Hong Kong
Hong KongAnnual Average
ModerateWHO annual classification
19.8µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2626 µg/m³ — Poor
2525 µg/m³ — Moderate
2222 µg/m³ — Moderate
2222 µg/m³ — Moderate
1616 µg/m³ — Moderate
7.27.2 µg/m³ — Good
8.28.2 µg/m³ — Good
1414 µg/m³ — Fair
2222 µg/m³ — Moderate
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
3535 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
2626 µg/m³ — Poor
2525 µg/m³ — Moderate
2222 µg/m³ — Moderate
2222 µg/m³ — Moderate
1616 µg/m³ — Moderate
7.27.2 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
8.28.2 µg/m³ — Good
1414 µg/m³ — Fair
2222 µg/m³ — Moderate
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
3535 µg/m³ — Poor
Best months: Jun–AugWorst months: Jan–Feb, Dec
Good5–10 µg/m³Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Hong Kong
Tuen Mun: 19.8 µg/m³. Typical range in Hong Kong: 13.6–15.8 µg/m³. Low anchor: Sai Kung, 13.1 µg/m³. High anchor: San Tin, 20.8 µg/m³.
17 cities tracked