SmogRank / World / Asia / Hong Kong / Wan Chai
Most polluted cities in Wan Chai, Hong Kong
1 measured city, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Wan Chai at 12.5 µg/m³, #197 in the world.
- 1Wan Chai 180.8×
China's Air Quality Index (HJ 633-2012), PM2.5 individual index. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Estimated: cities without a monitor
Wan Chai cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Leighton Hill | ≈ 12 µg/m³ |
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SmogRank, most polluted cities in Wan Chai, Hong Kong, PM2.5, last 24 hours to 2 Oct 2026, 07:00 UTC, smogrank.com/hk/region/wan-chai.
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Updated 2026-10-02 07:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the China AQI PM2.5 sub-index.