Air Quality Lab — Discovery Bay, Hong Kong
Air Quality Profile·
Discovery Bay reports an annual PM2.5 of 15.5 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Discovery Bay
Hong Kong
Hong KongAnnual Average
ModerateWHO annual classification
15.5µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1919 µg/m³ — Moderate
1717 µg/m³ — Moderate
1818 µg/m³ — Moderate
2222 µg/m³ — Moderate
1414 µg/m³ — Fair
6.86.8 µg/m³ — Good
7.27.2 µg/m³ — Good
9.49.4 µg/m³ — Good
1515 µg/m³ — Moderate
1818 µg/m³ — Moderate
1414 µg/m³ — Fair
2424 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
1919 µg/m³ — Moderate
1717 µg/m³ — Moderate
1818 µg/m³ — Moderate
2222 µg/m³ — Moderate
1414 µg/m³ — Fair
6.86.8 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
7.27.2 µg/m³ — Good
9.49.4 µg/m³ — Good
1515 µg/m³ — Moderate
1818 µg/m³ — Moderate
1414 µg/m³ — Fair
2424 µg/m³ — Moderate
Best months: Jun–AugWorst months: Jan, Apr, 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 Hong Kong
Discovery Bay: 15.5 µg/m³. Typical range in Hong Kong: 13.6–15.8 µg/m³. Low anchor: Sai Kung, 13.1 µg/m³. High anchor: Tuen Mun, 19.8 µg/m³.
17 cities tracked