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                     29.7 C
Minimum Air Temperature                     24.4 C
Grass Minimum Temperature                   25.7 C
Relative Humidity                        81 - 96 Percent
Rainfall                                    25.6 mm 
Total rainfall since 1st January           607.8 mm
Against an average of                      985.8 mm

Other Stations                Min                  Max
King's Park                  24.0 C               29.5 C
Wong Chuk Hang               24.3 C               29.2 C
Ta Kwu Ling                  24.4 C               28.4 C
Tai Po                       24.8 C               28.8 C
Sha Tin                      24.7 C               28.6 C
Tuen Mun                     24.4 C               28.7 C
Tseung Kwan O                24.2 C               29.5 C
Sai Kung                     25.0 C               29.8 C
Cheung Chau                  23.8 C               29.2 C
Chek Lap Kok                 25.1 C               30.7 C
Tsing Yi                     24.4 C               29.9 C
Shek Kong                    24.9 C               29.5 C
Tsuen Wan Ho Koon            23.7 C               27.3 C
Tsuen Wan Shing Mun Valley   24.5 C               29.1 C
Hong Kong Park               24.0 C               29.2 C
Shau Kei Wan                 24.0 C               29.9 C
Kowloon City                 23.9 C               29.2 C
Happy Valley                 24.6 C               29.6 C
Wong Tai Sin                 24.2 C               29.1 C
Stanley                      23.9 C               30.0 C
Kwun Tong                    24.2 C               29.9 C
Sham Shui Po                 24.1 C               29.1 C
Kai Tak Runway Park          24.2 C               29.7 C
Yuen Long Park               24.3 C               27.7 C
Tai Mei Tuk               24.4 C               27.9 C

Duration of sunshine (King's Park):              0.2 H
The mean UV index recorded at King's Park yesterday was 0.8,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
 

Yesterday's (23 Jun 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                             0.09
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
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.13

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.