Hong Kong vs Sha Tin AQI Comparison

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

Lower average AQI: Sha Tin (26-pt gap)PM2.5: Hong Kong 24.1 ug/m3 · Sha Tin 13.0 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 Sha Tin

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

Sha Tin

Hong Kong, Hong Kong

PM2.5: 13.0 ug/m3
PM10: 21.0 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Hong Kong

100

108

Sha Tin

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.