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What are the sources for WeatherOnline forecasts?

The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?

A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?

The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?

The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.

Stazioni meteo nelle vicinanze - Pontoise Distanza
Cormeilles 8.3 km
Trappes 32.9 km
Toussus-le-Noble 33.2 km
Villacoublay/Velizy 33.4 km
Parc Montsouris 36.7 km
Aeroporto di Parigi-Le Bourget 39.0 km
Beauvais/Tille 46.4 km
Aeroporto di Parigi Charles de Gaulle 48.4 km
Aeroporto di Parigi Orly 48.7 km
Creil 51.4 km
Melun 80.9 km
Chartres 93.1 km
Evreux/Fauville 98.4 km
Rouen/Boos 108.6 km
Albert Aeroporto 122.2 km
Méaulte 122.6 km
Orléans 124.1 km
Abbeville 124.1 km
Châteaudun 135.4 km
Dieppe 148.5 km
San Quintino 149.2 km
Le Touquet-Paris-Plage 171.8 km
Aérodrome de Blois 181.7 km
Boulogne-sur-Mer 195.4 km
Romorantin-Lanthenay 197.9 km
Aeroporto di Lilla Lesquin 202.2 km
Auxerre 211.6 km
Deauville-Saint-Gatien AP 218.0 km
Deauville-Saint-Gatien 218.1 km
Bourges 222.6 km
Dunkerque 224.0 km
Troyes - Barberey Airport 228.2 km
Reims - Prunay Aerodrome 229.6 km
Avord 230.7 km
Le Havre/Octeville 230.8 km
Sainte-Adresse 231.8 km
Aeroporto di Châlons-Vatry 231.8 km
Alencon/Valframbert 233.0 km
Tours/St Symphorien 235.1 km
Koksijde 235.1 km
Beitem 235.4 km
Le Mans/Arnage 245.3 km
Châteauroux 245.8 km
Langdon Bay 246.4 km
Aeroporto di Londra-Ashford 248.4 km
Ostenda Aeroporto 253.9 km
Aéroport de Nevers-Fourchambault 254.5 km
Chièvres 256.7 km
Manston 269.2 km
Gavere 272.5 km
Zeebrugge 283.4 km
Caen 284.3 km
Herstmonceux 285.3 km
Melle 287.3 km
Charleville-Mézières 293.5 km
Dourbes 301.8 km
Charleroi/Gosselies 305.3 km
Westdorpe 310.9 km
Shoeburyness 312.7 km
Florennes 312.8 km
Flessinga 314.8 km
San Dizier/Robinson 315.1 km
Angers 315.6 km
Uccle 317.8 km
Guéret Aeroporto 320.2 km
Aeroporto di Southend 321.2 km
Shoreham Airport 331.3 km
Ernage 333.3 km
Laval Aeroporto 336.2 km
Poitiers/Biard 339.9 km
Bruxelles Aeroporto 340.1 km
Wilhelminadorp 341.1 km
Biggin Hill 342.6 km
Aeroporto di Londra-Gatwick 345.3 km
Charlwood 348.7 km
Angers 349.1 km
Kenley 349.9 km
Sint-Katelijne-Waver 351.4 km
Vichy/Charmeil 351.7 km
Beauvechain 351.9 km
Euro Platform 352.9 km
Aeroporto di Londra-City 355.6 km
Anversa/Deurne 355.7 km
Stabroek 357.0 km
Saint-Yan 362.2 km
Woensdrecht 364.6 km
Le Goeree 364.9 km
Wattisham Airport 364.9 km
Andrewsfield Aerodrome 366.1 km
Limoges/Bellegarde 369.2 km
St. James's Park 369.2 km
Humain 373.2 km
Aeroporto di Londra Stansted 377.6 km
Clermont/Aulnat 382.2 km
San Hubert/Ardennen 383.2 km
Langres Aeroporto 384.5 km
Dijon Air Base 387.2 km
Thorney Island 389.6 km
P11-b Sea 392.0 km
Aeroporto di Londra-Heathrow 392.1 km