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Yesterday's Weather and Radiation Level

Bulletin issued at 00:15 HKT 15/Nov/2019
HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:

Hong Kong Observatory
Maximum Air Temperature                     25.9 C
Minimum Air Temperature                     21.1 C
Grass Minimum Temperature                   19.0 C
Relative Humidity                        54 - 76 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2382.7 mm
Against an average of                     2352.7 mm

Other Stations                Min                  Max
King's Park                  20.7 C               26.0 C
Wong Chuk Hang               19.8 C               25.3 C
Ta Kwu Ling                  17.9 C               26.6 C
Lau Fau Shan                 19.2 C               24.7 C
Tai Po                       18.9 C               24.7 C
Sha Tin                      19.9 C               25.1 C
Tseung Kwan O                19.2 C               26.0 C
Sai Kung                     20.3 C               24.6 C
Cheung Chau                  19.5 C               26.9 C
Chek Lap Kok                 21.2 C               25.9 C
Tsing Yi                     21.2 C               26.4 C
Shek Kong                    19.2 C               25.9 C
Tsuen Wan Ho Koon            18.0 C               25.4 C
Tsuen Wan Shing Mun Valley   19.0 C               27.3 C
Hong Kong Park               20.4 C               26.2 C
Shau Kei Wan                 20.1 C               26.7 C
Kowloon City                 20.3 C               27.3 C
Happy Valley                 20.4 C               26.1 C
Wong Tai Sin                 20.6 C               26.1 C
Stanley                      21.0 C               25.4 C
Kwun Tong                    20.1 C               25.1 C
Sham Shui Po                 20.4 C               27.4 C
Kai Tak Runway Park          21.1 C               25.1 C
Yuen Long Park               19.3 C               26.3 C
Tai Mei Tuk               19.5 C               26.7 C

Duration of sunshine (King's Park):              8.6 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 5.

Yesterday's (14 Nov 2019) 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
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                           0.13
Sai Wan Ho                          0.10
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.15

  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.
  4. The data displayed is provisional. Only limited data validation has been carried out.
Climatological Information for 14 Nov
Last revision date: <15 Nov 2019>