Air Quality in South Horizons (Estate), Hong Kong

Drizzle
28.6°C · 82.1% humidity
28.6°
Feels 35.2°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
15 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
72 4am
73
76
63 7am
66
69
71 10am
72
73
73 1pm
74
74
74 4pm
75
75
75 7pm
92
92
92 10pm
92
92
92 1am
92
75
Station readings
72
73
76
CAMS model adj +9
54
54
66
66
66
66
66
66
66
66
66
66
66
66
66
66
83
83
83
83
83
83
83
66
AD 728×90

Air Quality Index Trend

47h · 2 stn

Current PM2.5 concentration in South Horizons (Estate) is 1.2× the WHO 24-hour guideline of 15 µg/m³.

82.1%
Humidity
21.0 km/h
Wind N
998.8 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
63
17.78 µg/m³
PM10
38
41.2 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.517.78 µg/m³ ×1.2 WHO
Moderate
PM1041.2 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
17.78
Median
15.01
Average
8.4
Low
28.3
High
PM2.5 µg/m³ · Model: 19.2 · Bias: +1.4
07-21
28.9° 28.5°
4.81 mm
07-22
30.3° 27.7°
16.06 mm
07-23
30.6° 27.4°
19.06 mm
07-24
28.8° 27.8°
2.75 mm
07-25
29.1° 27.7°
1.44 mm
07-26
29.9° 25.9°
26.44 mm
07-27
29.1° 24.4°
7.25 mm
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T23:47 UTC.