This is an international organization which provides lots of information about weather world wide. It is especailly used for urgent.

http://www.worldweather.org

This is the official web site for Hong Kong. It provides local weather information and links of world wide organization which obseve weather.

http://www.hko.gov.hk

This is a local officail web site for Hong Kong Environment. It provides information about the envrionment like air pollution index .

http://www.epd.gov.hk/epd/

A web site for weather mainly in UK. It also provides related information about weather world wide.

http://www.bbc.co.uk/weather/