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UV Radiation Information

Notice:
Hong Kong Observatory has launched a new Ultraviolet (UV) Radiation Information Webpage in August 2018.  This webpage will be decommissioned on 31 October 2018.
Go to:
New UV Radiation Information Webpage (desktop version)
New UV Radiation Information Webpage (mobile version)


UV index forecast


UV index forecast for today / tomorrow
UV index forecast methodology and factors affecting its accuracy