Meteorological Service of the Netherlands Antilles and Aruba (MDNAA): Offers forecasts, radar and satellite images. Features tropical cyclone and storm information and includes climatological summaries, and daily, marine and graphic 3-day forecasts.
NOAA NWS - Aruba Weather: US government site provides hour-by-hour weather conditions for the past 24 hours for major cities and locations in the country.
Weather Underground - Aruba: Displays current conditions for all major cities on one page, with five-day forecast and more detailed information for each available.
Weather.com - Aruba: City-by-city weather reports and forecasts.