What is the air quality trend in Tsz Wan Shan?

Over the past 8 days, Tsz Wan Shan had an average AQI of 59 based on station measurements. The worst day was 2026-05-22 with AQI 75.

How is Tsz Wan Shan air quality measured?

Air quality in Tsz Wan Shan is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Tsz Wan Shan, Hong Kong

Name: Tsz Wan Shan Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Tsz Wan Shan, Hong Kong.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	55	30–77	15.0 µg/m³	15.8	22h	2
2026-05-28	54	42–60	13.6 µg/m³	14.5	24h	2
2026-05-27	50	42–61	12.0 µg/m³	13.0	24h	2
2026-05-26	51	43–62	12.7 µg/m³	13.3	24h	1
2026-05-25	53	41–69	13.8 µg/m³	15.0	24h	2
2026-05-24	68	59–157	20.5 µg/m³	22.4	24h	2
2026-05-23	72	64–80	21.9 µg/m³	23.2	24h	2
2026-05-22	75	75–75	23.5 µg/m³	25.6	2h	2

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