Points to note: |
(i) | The numerical Hong Kong Heat Index reading above represents the average of readings in the 10 minutes ending at the indicated time |
(ii) | 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. |
(iii) | Generally speaking, the public should take appropriate precautions when the index at King’s Park reaches around 30 or above to prevent from adverse health effects brought by hot weather. |
(iv) | To see a time series plot of the Hong Kong Heat Index in the past 24 hours, please click the mouse on the station of your choice. |
(v) | The data displayed is provisional. Only limited data validation has been carried out. |
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