Air Quality Lab — Hong Kong, Hong Kong
Air Quality Profile
Hong Kong reports an annual PM2.5 of 15.6 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Hong Kong
Hong Kong
Hong KongAnnual Average
ModerateWHO annual classification
15.6µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2424 µg/m³ — Moderate
1818 µg/m³ — Moderate
1919 µg/m³ — Moderate
1818 µg/m³ — Moderate
1111 µg/m³ — Fair
8.38.3 µg/m³ — Good
8.08.0 µg/m³ — Good
1010 µg/m³ — Fair
1212 µg/m³ — Fair
1717 µg/m³ — Moderate
1919 µg/m³ — Moderate
2424 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2424 µg/m³ — Moderate
1818 µg/m³ — Moderate
1919 µg/m³ — Moderate
1818 µg/m³ — Moderate
1111 µg/m³ — Fair
8.38.3 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
8.08.0 µg/m³ — Good
1010 µg/m³ — Fair
1212 µg/m³ — Fair
1717 µg/m³ — Moderate
1919 µg/m³ — Moderate
2424 µg/m³ — Moderate
Best months: Jun–AugWorst months: Jan, Nov–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
Hong Kong: 15.6 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