Kwai Chung vs San Tung Chung Hang AQI Comparison

Side-by-side OpenAQ-derived air quality comparison for Kwai Chung and San Tung Chung Hang. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.

Lower average AQI: Kwai Chung (1-pt gap)PM2.5: Kwai Chung 15.2 ug/m3 · San Tung Chung Hang 16.3 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

Kwai Chung vs San Tung Chung Hang

Kwai Chung

Hong Kong, Hong Kong

PM2.5: 15.2 ug/m3
PM10: 23.7 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

San Tung Chung Hang

Hong Kong, Hong Kong

PM2.5: 16.3 ug/m3
PM10: 23.3 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Kwai Chung

San Tung Chung Hang

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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.