What is the air quality trend in South Horizons (Estate)?

Over the past 15 days, South Horizons (Estate) had an average AQI of 81 based on station measurements. The worst day was 2026-10-13 with AQI 124.

How is South Horizons (Estate) air quality measured?

Air quality in South Horizons (Estate) 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 South Horizons (Estate), Hong Kong

Name: South Horizons (Estate) Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near South Horizons (Estate), Hong Kong.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	84	75–89	27.8 µg/m³	29.6	5h	2
2026-10-20	56	27–81	15.5 µg/m³	16.2	24h	2
2026-10-19	65	31–84	19.6 µg/m³	20.5	24h	2
2026-10-18	52	33–104	13.8 µg/m³	14.6	24h	2
2026-10-17	61	44–79	16.8 µg/m³	17.6	24h	2
2026-10-16	85	62–103	28.2 µg/m³	30.8	24h	2
2026-10-15	99	86–118	34.5 µg/m³	39.2	24h	2
2026-10-14	114	94–139	40.8 µg/m³	47.9	24h	2
2026-10-13	124	102–147	45.0 µg/m³	52.8	24h	2
2026-10-12	96	89–110	33.4 µg/m³	37.2	24h	2
2026-10-11	86	72–97	28.5 µg/m³	30.5	24h	2
2026-10-10	83	74–97	27.2 µg/m³	28.6	24h	2
2026-10-09	62	55–80	17.4 µg/m³	18.1	24h	2
2026-10-08	64	35–98	18.9 µg/m³	20.0	24h	2
2026-10-07	85	78–91	28.2 µg/m³	30.1	19h	2

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