Hong Kong AQI Trends
Compare yearly air-quality direction, best years, worst years, and trend deltas. This pilot covers 11 eligible cities with OpenAQ-derived daily AQI history.
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Yearly EPA AQI trend
City analytics table
| City | Avg AQI | PM2.5 | Worst month | Trend | Coverage |
|---|---|---|---|---|---|
| Hong Kong Hong Kong, Hong Kong | 79 | 24.1 ug/m3 | December | n/a | 364 days · 1 locations |
| Tin Shui Wai Hong Kong, Hong Kong | 67 | 18.5 ug/m3 | December | n/a | 365 days · 2 locations |
| Sham Shui Po Hong Kong, Hong Kong | 62 | 16.3 ug/m3 | December | n/a | 365 days · 2 locations |
| Wan Tau Tong Hong Kong, Hong Kong | 61 | 15.9 ug/m3 | December | n/a | 365 days · 2 locations |
| San Tung Chung Hang Hong Kong, Hong Kong | 61 | 16.3 ug/m3 | December | n/a | 364 days · 1 locations |
| Shek Wai Kok Hong Kong, Hong Kong | 60 | 15.5 ug/m3 | December | n/a | 363 days · 1 locations |
| Kwai Chung Hong Kong, Hong Kong | 60 | 15.2 ug/m3 | December | n/a | 364 days · 1 locations |
| Central District Hong Kong, Hong Kong | 57 | 13.9 ug/m3 | December | n/a | 363 days · 1 locations |
| Lam Tin Hong Kong, Hong Kong | 57 | 14.0 ug/m3 | December | n/a | 364 days · 1 locations |
| Sai Wan Ho Hong Kong, Hong Kong | 56 | 14.4 ug/m3 | December | n/a | 364 days · 1 locations |
| Sha Tin Hong Kong, Hong Kong | 53 | 13.0 ug/m3 | December | n/a | 364 days · 1 locations |
Methodology
The extractor maps OpenAQ monitoring locations to the nearest AQI Now city in the same country, aggregates PM2.5 and PM10 to daily city averages, and converts those concentrations to US EPA AQI. Country tool pages use only city summaries that satisfy the configured minimum daily coverage threshold.