Mappi.net offers updated maps in real time, or with a small lag. Services possible on Internet :
Geolocation World :
Map in real time to know your position.
Mappi.net
France Weather :
Weather Map of France with weather alerts in real time.
MétéoFrance.com
Map of earthquakes :
Map showing all recorded earthquakes in the world, updated several times a day with Iris: Incorporated Research Institutions for Seismology.
Iris.edu
Satellite World :
Use both the European ENVISAT satellite sensors for satellites take pictures in real time in the world and in some cases less than 2 hours difference depending on the area and type of photo. Thanks to ESA, the Space Agency.
https://esar-ds.eo.esa.int/oads/access/
Weather Satellite In Europe :
Satellite map in real time to weather in Europe. With Meteosat get a picture with only 30 minutes late.
Sat24.com
Map of winds in the world :
Wind map in the world with Windfinder, find the good spots in time.
Windfinder.com
Ships in the world :
Map positions in large vessels in the world, in real time, with the site.
MarineTraffic.com