Hong Kong Observatory Logo

Bulletin updated at 00:15 HKT
27/ Mar /2019

Yesterday's Weather and Radiation Level

Hong Kong Observatory:
Maximum Air Temperature: 24.6 C
Minimum Air Temperature: 20.8 C
Grass Minimum Temperature: 19.6 C
Relative Humidity: 75 - 88 percent
Rainfall: 0 mm

Total Rainfall since 1st January: 245.3 mm
Against an average of 142.4 mm

Other Stations
Min
Max
King's Park
20.1 C
24.3 C
Wong Chuk Hang
20.4 C
25.0 C
Ta Kwu Ling
19.5 C
25.2 C
Lau Fau Shan
18.8 C
27.9 C
Tai Po
19.8 C
23.6 C
Sha Tin
20.0 C
24.5 C
Tuen Mun
20.1 C
25.1 C
Tseung Kwan O
18.8 C
23.5 C
Sai Kung
20.0 C
22.8 C
Cheung Chau
19.7 C
25.6 C
Chek Lap Kok
20.2 C
26.7 C
Tsing Yi
20.2 C
25.9 C
Shek Kong
19.6 C
27.1 C
Tsuen Wan Ho Koon
19.1 C
25.3 C
Tsuen Wan Shing Mun Valley
20.1 C
25.3 C
Hong Kong Park
20.5 C
24.9 C
Shau Kei Wan
19.8 C
22.4 C
Kowloon City
20.0 C
25.7 C
Happy Valley
20.7 C
25.3 C
Wong Tai Sin
20.3 C
25.3 C
Stanley
20.1 C
22.8 C
Kwun Tong
19.7 C
23.6 C
Sham Shui Po
20.7 C
25.3 C

Duration of Sunshine (King's Park): 3.2 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 6.
Yesterday's (26 Mar) 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)
King's Park
0.14
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
Tsim Bei Tsui
0.13

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.
homeback