Royal Dutch Meteorological Institute. The section of the site in English gives an overview of the research programmes.

City-by-city weather reports and forecasts.

Provides climate and weather information, facts and statistics about the country, along with five-day forecasts for major cities.

Displays current conditions for all major cities on one page, with five-day forecast and more detailed information for each available.

US government site provides hour-by-hour weather conditions for the past 24 hours for major cities and locations in the country.