Hong Kong vs Shek Wai Kok AQI Comparison

Side-by-side OpenAQ-derived air quality comparison for Hong Kong and Shek Wai Kok. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.

Lower average AQI: Shek Wai Kok (19-pt gap)PM2.5: Hong Kong 24.1 ug/m3 · Shek Wai Kok 15.5 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2023-12-31–2024-12-31 and 2023-12-31–2024-12-31.

Compare two cities

City A

City B

Hong Kong vs Shek Wai Kok

Hong Kong

Hong Kong, Hong Kong

PM2.5: 24.1 ug/m3
PM10: 37.4 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

Shek Wai Kok

Hong Kong, Hong Kong

PM2.5: 15.5 ug/m3
PM10: 22.5 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

Lower average AQI in this selected period: Shek Wai Kok. Values are historical OpenAQ-derived city summaries, not live readings.

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Hong Kong

100

108

Shek Wai Kok

What this comparison measures

Average EPA AQI — city-level daily AQI values averaged across the OpenAQ coverage window.
PM2.5 and PM10 — mapped monitor concentrations aggregated to daily city averages.
Seasonality — worst and cleanest months from the monthly city rollups.
Trend — difference between the earliest and latest yearly AQI average in this build.