Weather Report > Yesterday's Weather and Radiation Level
Bulletin updated at 00:15 HKT 18/ Nov /2018

Yesterday's Weather and Radiation Level

Hong Kong Observatory:
Maximum Air Temperature: 23.8°C
Minimum Air Temperature: 23.1°C
Grass Minimum Temperature: 22.5°C
Relative Humidity: 82 - 94%
Rainfall: 0.5 mm

Total rainfall since 1st January: 2087.6 mm
Against an average of 2358.4 mm

Other Stations Min Max
King's Park 22.5°C 23.5°C
Ta Kwu Ling 22.8°C 25.2°C
Wong Chuk Hang 22.9°C 24.2°C
Lau Fau Shan 22.2°C 24.5°C
Tai Po 22.1°C 23.3°C
Sha Tin 22.9°C 24.1°C
Tuen Mun 23.1°C 25.0°C
Tseung Kwan O 22.4°C 23.5°C
Sai Kung 23.0°C 24.2°C
Cheung Chau 22.6°C 24.2°C
Chek Lap Kok 22.4°C 26.2°C
Tsing Yi 23.2°C 24.8°C
Shek Kong 23.3°C 25.7°C
Tsuen Wan Ho Koon 22.0°C 24.4°C
Tsuen Wan Shing Mun Valley 22.9°C 24.3°C
Hong Kong Park 23.0°C 23.9°C
Shau Kei Wan 22.4°C 23.4°C
Kowloon City 22.4°C 23.9°C
Happy Valley 23.2°C 24.3°C
Wong Tai Sin 22.8°C 24.1°C
Stanley 22.7°C 23.7°C
Kwun Tong 22.3°C 23.6°C
Sham Shui Po 22.9°C 25.2°C
Kai Tak Runway Park 23.0°C 24.4°C
Yuen Long Park 23.2°C 24.9°C
Duration of Sunshine (King's Park): 0.0 H

The mean UV Index recorded at King's Park yesterday was 0.5, the UV intensity was low.

The maximum UV Index for yesterday was 2.

Yesterday's (17 Nov) 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 0.14
Ping Chau 0.09
Tap Mun 0.09
Kat O 0.10
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'Aguilar0.13
Chek Lap Kok0.15


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.
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