Hong Kong Observatory - Yesterday's Weather and Radiation Level
  • Yesterday's Weather and Radiation Level

Hong Kong Observatory:
Maximum Air Temperature: 22.4°C
Minimum Air Temperature: 18.8°C
Grass Minimum Temperature: 18.1°C
Relative Humidity: 77 - 93%
Rainfall: 0.2 mm

Total rainfall since 1st January: 6.7 mm
Against an average of 52.6 mm
Bulletin updated at 00:15 HKT 16/ Feb /2019
Other Stations Min Max
King's Park 18.2°C 23.0°C
Ta Kwu Ling 18.8°C 25.0°C
Wong Chuk Hang 18.6°C 23.7°C
Lau Fau Shan 17.6°C 25.3°C
Tai Po 18.5°C 21.6°C
Sha Tin 18.7°C 22.9°C
Tuen Mun 19.3°C 23.4°C
Tseung Kwan O 17.6°C 20.8°C
Sai Kung 18.5°C 21.9°C
Cheung Chau 18.3°C 23.3°C
Chek Lap Kok 19.3°C 24.9°C
Tsing Yi 19.5°C 24.6°C
Shek Kong 19.0°C 25.6°C
Tsuen Wan Ho Koon 18.5°C 24.2°C
Tsuen Wan Shing Mun Valley 19.0°C 24.4°C
Hong Kong Park 18.8°C 22.0°C
Shau Kei Wan 17.7°C 21.0°C
Kowloon City 18.4°C 23.2°C
Happy Valley 18.8°C 23.4°C
Wong Tai Sin 18.7°C 24.3°C
Stanley 17.9°C 20.8°C
Kwun Tong 17.8°C 22.1°C
Sham Shui Po 19.2°C 23.7°C
Kai Tak Runway Park 18.6°C 21.3°C
Yuen Long Park 18.2°C 24.7°C
Tai Mei Tuk 18.4°C 24.5°C
Duration of Sunshine (King's Park): 2.6 H

The mean UV Index recorded at King's Park yesterday was 3, the UV intensity was moderate.

The maximum UV Index for yesterday was 7.

Yesterday's (15 Feb) average ambient gamma radiation dose rate taken outdoors in Hong Kong ranged from 0.09 to 0.15 microsievert per hour. These are within the normal range of fluctuation of the background radiation level in Hong Kong (See Note).

The average dose rates measured at the radiation monitoring stations over various parts of the territory were as follows :
Station Yesterday's average
King's Park 0.15
Ping Chau 0.09
Tap Mun 0.09
Kat O 0.11
Yuen Ng Fan 0.12
Tai Mei Tuk 0.12
Sha Tau Kok 0.10
Kwun Tong 0.12
Sai Wan Ho 0.09
Tsim Bei Tsui 0.13
Cape D'Aguilar 0.13
Chek Lap Kok 0.14


1. From readings taken at various locations in Hong Kong in the past, the hourly mean ambient gamma radiation dose rate may vary between 0.06 and 0.3 microsievert per hour. (1 microsievert = 0.000001 sievert = 0.001 millisievert)
2. Temporal variations are generally caused by changes in meteorological conditions such as rainfall, wind and barometric pressure.
3. Spatial variations are generally caused by differences in the radioactive content of local rock and soil.
4. The data displayed is provisional. Only limited data validation has been carried out.