Yesterday's Weather and Radiation Level

HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
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Hong Kong Observatory
Maximum Air Temperature                     32.4 C
Minimum Air Temperature                     28.8 C
Grass Minimum Temperature                   27.0 C
Relative Humidity                        71 - 84 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           546.7 mm
Against an average of                      944.7 mm

Other Stations                Min                  Max
King's Park                  28.1 C               32.8 C
Wong Chuk Hang               28.2 C               31.0 C
Ta Kwu Ling                  25.5 C               33.5 C
Lau Fau Shan                 26.6 C               33.2 C
Tai Po                       26.9 C               32.7 C
Sha Tin                      28.2 C               32.4 C
Tuen Mun                     27.8 C               32.5 C
Tseung Kwan O                27.3 C               33.5 C
Sai Kung                     27.1 C               34.2 C
Cheung Chau                  27.2 C               33.0 C
Chek Lap Kok                 28.7 C               33.9 C
Tsing Yi                     28.4 C               31.6 C
Shek Kong                    27.1 C               33.5 C
Tsuen Wan Ho Koon            27.1 C               29.9 C
Tsuen Wan Shing Mun Valley   27.7 C               30.6 C
Hong Kong Park               28.4 C               31.1 C
Shau Kei Wan                 28.2 C               32.5 C
Kowloon City                 27.9 C               32.7 C
Happy Valley                 28.7 C               32.5 C
Wong Tai Sin                 27.9 C               32.8 C
Stanley                      28.2 C               30.6 C
Kwun Tong                    28.4 C               32.1 C
Sham Shui Po                 27.6 C               31.7 C
Kai Tak Runway Park          28.4 C               32.5 C
Yuen Long Park               26.9 C               33.8 C

Duration of sunshine (King's Park):              7.5 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 11.
 

Yesterday's (20 Jun 2018) 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
                            (microsievert/hour)
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                          0.08
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

Note

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)
Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.
Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.
The data displayed is provisional. Only limited data
validation has been carried out.