Sai Wan Ho vs Tin Shui Wai AQI Comparison

Side-by-side OpenAQ-derived air quality comparison for Sai Wan Ho and Tin Shui Wai. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.

Lower average AQI: Sai Wan Ho (11-pt gap)PM2.5: Sai Wan Ho 14.4 ug/m3 · Tin Shui Wai 18.5 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

Sai Wan Ho vs Tin Shui Wai

Sai Wan Ho

Hong Kong, Hong Kong

PM2.5: 14.4 ug/m3
PM10: 24.4 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

Tin Shui Wai

Hong Kong, Hong Kong

PM2.5: 18.5 ug/m3
PM10: 29.1 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Sai Wan Ho

Tin Shui Wai

106

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.