Weather Report > Yesterday's Weather and Radiation Level
Bulletin updated at 00:15 HKT 23/ Mar /2019

Yesterday's Weather and Radiation Level

Hong Kong Observatory:
Maximum Air Temperature: 27.5°C
Minimum Air Temperature: 24.8°C
Grass Minimum Temperature: 22.6°C
Relative Humidity: 79 - 89%
Rainfall: Trace

Total rainfall since 1st January: 240.7 mm
Against an average of 124.1 mm

Other Stations Min Max
King's Park 24.1°C 27.5°C
Ta Kwu Ling 22.4°C 28.4°C
Wong Chuk Hang 23.7°C 26.3°C
Lau Fau Shan 23.1°C 28.0°C
Tai Po 21.9°C 28.0°C
Sha Tin 23.3°C 28.2°C
Tuen Mun 23.3°C 27.0°C
Tseung Kwan O 22.5°C 27.3°C
Sai Kung 22.2°C 25.6°C
Cheung Chau 22.6°C 26.9°C
Chek Lap Kok 23.6°C 27.9°C
Tsing Yi 23.8°C 27.2°C
Shek Kong 22.8°C 28.9°C
Tsuen Wan Ho Koon 23.3°C 25.5°C
Tsuen Wan Shing Mun Valley 23.7°C 26.6°C
Hong Kong Park 24.5°C 27.1°C
Shau Kei Wan 22.4°C 27.2°C
Kowloon City 23.8°C 27.5°C
Happy Valley 24.8°C 27.7°C
Wong Tai Sin 23.9°C 27.8°C
Stanley 23.1°C 27.2°C
Kwun Tong 22.8°C 27.6°C
Sham Shui Po 24.0°C 27.8°C
Kai Tak Runway Park 23.4°C 26.6°C
Yuen Long Park 22.7°C 28.5°C
Duration of Sunshine (King's Park): 0.9 H

The mean UV Index recorded at King's Park yesterday was 1, the UV intensity was low.

The maximum UV Index for yesterday was 4.

Yesterday's (22 Mar) average ambient gamma radiation dose rate taken outdoors in Hong Kong ranged from 0.08 to 0.14 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 0.08
Kat O 0.10
Yuen Ng Fan 0.12
Tai Mei Tuk 0.11
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 Kok0.14


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.
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