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Yuen Long Kau Hui (Yuen Long) (HK)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Częściowe zachmurzenie
21°C
Częściowe zachmurzenie
Humidity
89.5%
Wind
3 m/s
Pressure
1010.3 hPa
Direction
116°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
20° / 22°
Precip.
9.2mm
Max wind
8.4 m/s

Hourly Forecast

27.02
Now
Weather
21°
27.02
14:00
Weather
21°
27.02
15:00
Weather
21°
27.02
16:00
Weather
21°
0.3
27.02
17:00
Weather
21°
0.8
27.02
18:00
Weather
21°
0.3
27.02
19:00
Weather
21°
0.1
27.02
20:00
Weather
21°
27.02
21:00
Weather
21°
27.02
22:00
Weather
21°
0.2
27.02
23:00
Weather
20°
0.3
5
28.02
00:00
Weather
20°
0.2
6
28.02
01:00
Weather
20°
4
6
28.02
02:00
Weather
20°
2.8
7
28.02
03:00
Weather
21°
7
28.02
04:00
Weather
22°
8
28.02
05:00
Weather
22°
8
28.02
06:00
Weather
22°
0.2
8
28.02
07:00
Weather
21°
8
28.02
08:00
Weather
21°
7
28.02
09:00
Weather
21°
6
28.02
10:00
Weather
20°
7
28.02
11:00
Weather
20°
7
28.02
12:00
Weather
20°
6

Temperature

22°C
20°C
13:00
21°C
14:00
21°C
15:00
21°C
16:00
21°C
17:00
21°C
18:00
21°C
19:00
21°C
20:00
21°C
21:00
21°C
22:00
21°C
23:00
20°C
00:00
20°C
01:00
20°C
02:00
20°C
03:00
21°C
04:00
22°C
05:00
22°C
06:00
22°C
07:00
21°C
08:00
21°C
09:00
21°C
10:00
20°C
11:00
20°C
12:00
20°C
13:00 00:00 12:00

Precipitation

4mm
0mm
16:00
0.3mm
17:00
0.8mm
18:00
0.3mm
19:00
0.1mm
22:00
0.2mm
23:00
0.3mm
00:00
0.2mm
01:00
4mm
02:00
2.8mm
06:00
0.2mm
13:00 00:00 12:00

Wind

8.4m/s
0m/s
13:00
2.6 m/s
14:00
3 m/s
15:00
2.9 m/s
16:00
3 m/s
17:00
3.2 m/s
18:00
2.6 m/s
19:00
3.2 m/s
20:00
3.5 m/s
21:00
4.3 m/s
22:00
4.4 m/s
23:00
5.4 m/s
00:00
6.1 m/s
01:00
6.2 m/s
02:00
6.8 m/s
03:00
6.8 m/s
04:00
8.4 m/s
05:00
7.6 m/s
06:00
7.5 m/s
07:00
7.5 m/s
08:00
7.1 m/s
09:00
6.3 m/s
10:00
7.2 m/s
11:00
7 m/s
12:00
6.3 m/s
13:00 00:00 12:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
23.7 km
169
56.3%

Measurement time: 2026-02-27 14:00

Calculated from PM2.5/PM10

PM2.5
23.7 km
92 µg/m3
109.5%

Measurement time: 2026-02-27 14:00

source: Aqicn

PM10
10.7 km
39 µg/m3
27.9%

Measurement time: 2026-02-27 14:00

source: Aqicn

O3
10.7 km
33.3 µg/m3
20.8%

Measurement time: 2026-02-27 14:00

source: Aqicn

NO2
23.7 km
37.9 µg/m3
19%

Measurement time: 2026-02-27 14:00

source: Aqicn

SO2
10.7 km
4.6 µg/m3
1.3%

Measurement time: 2026-02-27 14:00

source: Aqicn

CO
69.8 km
0.0073 mg/m3
0.1%

Measurement time: 2026-02-27 14:00

source: Aqicn

Info


Region: Yuen Long
Latitude: 22.45
Longitude: 114.03333

Cities in the area:

About Air Quality in Yuen Long Kau Hui

Air quality in Yuen Long Kau Hui is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Yuen Long Kau Hui

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Yuen Long Kau Hui?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Yuen Long Kau Hui

If you're planning outdoor activities in Yuen Long Kau Hui, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.