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Ambient Gamma Radiation Level
in Hong Kong (Updated hourly)

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Hourly Mean Ambient Gamma Radiation dose rate recorded in Hong Kong


Hourly Mean Dose Rate at Ping Chau
Hourly Mean Dose Rate at Ping Chau

Hourly Mean Dose Rate at Tap Mun
Hourly Mean Dose Rate at Tap Mun

Hourly Mean Dose Rate at Kat O
Hourly Mean Dose Rate at Kat O

Hourly Mean Dose Rate at Yuen Ng Fan
Hourly Mean Dose Rate at Yuen Ng Fan

Hourly Mean Dose Rate at Tai Mei Tuk
Hourly Mean Dose Rate at Tai Mei Tuk

Hourly Mean Dose Rate at Sha Tau Kok
Hourly Mean Dose Rate at Sha Tau Kok

Hourly Mean Dose Rate at Kwun Tong
Hourly Mean Dose Rate at Kwun Tong

Hourly Mean Dose Rate at Sai Wan Ho
Hourly Mean Dose Rate at Sai Wan Ho

Hourly Mean Dose Rate at King's Park
Hourly Mean Dose Rate at King's Park

Hourly Mean Dose Rate at Tsim Bei Tsui
Hourly Mean Dose Rate at Tsim Bei Tsui

Hourly Mean Dose Rate at Cape D'Aguilar
Hourly Mean Dose Rate at Cape D'Aguilar

Hourly Mean Dose Rate at Chek Lap Kok
Hourly Mean Dose Rate at Chek Lap Kok
Hourly Mean Dose Rate at Ping Chau Hourly Mean Dose Rate at Tap Mun Hourly Mean Dose Rate at Kat O Hourly Mean Dose Rate at Yuen Ng Fan Hourly Mean Dose Rate at Tai Mei Tuk Hourly Mean Dose Rate at Sha Tau Kok Hourly Mean Dose Rate at Kwun Tong Hourly Mean Dose Rate at Sai Wan Ho Hourly Mean Dose Rate at King's Park Hourly Mean Dose Rate at Tsim Bei Tsui Hourly Mean Dose Rate at Cape D'Aguilar Hourly Mean Dose Rate at Chek Lap Kok

  Remarks:
 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 Observatory achieved ISO 9001:2008 certification for the provision of ambient gamma radiation level measurement service in October 2015. The service was further accredited with ISO 9001:2015 certification in August 2018.