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King's Park Meteorological Station

24-hour Time Series of Hong Kong Heat Index (Beta Version)
24-hour Time Series of Hong Kong Heat Index

Remark :

The Hong Kong Heat Index was calculated from the measured Natural Wet Bulb Temperature (Tnw), Globe Temperature (Tg) and Dry Bulb Temperature (Ta). Its value is given by 0.80Tnw + 0.05Tg + 0.15Ta. Reference : K.L. Lee, Y.H. Chan , T.C. Lee, William B. Goggins & Emily Y.Y. Chan, The development of the Hong Kong Heat Index for enhancing the heat stress information service of the Hong Kong Observatory, International Journal of Biometeorology, DOI 10.1007/s00484-015-1094-7, November 2015


Generally speaking, the public should take appropriate precautions when the index reaches around 30 or above to prevent from adverse health effects brought by hot weather.

(iii) The data displayed above is provisional. Only limited data validation has been carried out.
Last revision date: <15 Jun 2016>