Bulletin issued at 00:15 HKT 05/May/2024
HKO Readings & Radiation level Yesterday's Weather and Radiation Level: ------------------------------------------------------ Hong Kong Observatory Maximum Air Temperature 25.4 C Minimum Air Temperature 22.4 C Grass Minimum Temperature 21.6 C Relative Humidity 89 - 96 Percent Rainfall 75.1 mm Total rainfall since 1st January 418.6 mm Against an average of 330.7 mm Other Stations Min Max King's Park 21.8 C 25.0 C Wong Chuk Hang 22.1 C 26.5 C Ta Kwu Ling 21.8 C 24.3 C Tai Po 21.8 C 24.2 C Sha Tin 22.5 C 25.7 C Tuen Mun 21.7 C 25.0 C Tseung Kwan O 21.8 C 24.3 C Sai Kung 22.2 C 24.6 C Cheung Chau 21.1 C 24.5 C Chek Lap Kok 21.9 C 26.0 C Tsing Yi 21.6 C 25.3 C Shek Kong 21.5 C 24.9 C Tsuen Wan Ho Koon 20.8 C 23.7 C Tsuen Wan Shing Mun Valley 21.3 C 24.3 C Hong Kong Park 21.7 C 24.9 C Shau Kei Wan 21.7 C 24.3 C Kowloon City 21.2 C 25.5 C Happy Valley 22.3 C 26.7 C Wong Tai Sin 22.0 C 26.3 C Stanley 21.8 C 24.9 C Kwun Tong 21.6 C 24.6 C Sham Shui Po 21.3 C 25.5 C Kai Tak Runway Park 22.1 C 25.2 C Yuen Long Park 21.4 C 25.2 C Tai Mei Tuk 21.5 C 23.7 C Duration of sunshine (King's Park):0.1 H The mean UV index recorded at King's Park yesterday was 0.9the UV intensity was LOW The maximum UV index for yesterday was 3. Sea Surface Temperature (Waglan Island): 24.8 C Yesterday's (04 May 2024) 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 (microsievert/hour) Ping Chau 0.10 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 0.13 Sai Wan Ho 0.09 King's Park 0.15 Tsim Bei Tsui 0.13 Cape D'Aguilar 0.12 Chek Lap Kok 0.15 Note 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. 5. The range of relative humidity in the daily weather summary originates from the observer's reports of Hourly Readings of the day. This follows the long-term practice of collecting climatological data of the Hong Kong Observatory for over a century. It may differ from the relative humidity range derived from the 1-minute reports of the automatic weather station.Yesterday's Radiation Level