Find answers to common questions about ngmeteo.com weather forecasts, tools, and features.
What is ngmeteo.com?
ngmeteo.com is a free weather forecast website that provides interactive maps and tools based on leading numerical weather prediction models. We offer temperature, precipitation, wind, UV index, and geopotential height forecasts, as well as ensemble forecasts and specialized calculators for solar and wind energy production.
Which weather models do you use?
We use four major weather models: GFS (Global Forecast System) from NOAA, ECMWF (European Centre for Medium-Range Weather Forecasts), ICON-EU from the German Weather Service (DWD), and AIFS (ECMWF's AI-based forecast system). Each model has different strengths and update frequencies.
How often are the forecasts updated?
GFS updates every 6 hours (00, 06, 12, 18 UTC). ECMWF updates twice daily (00, 12 UTC). ICON-EU updates every 6 hours. AIFS updates twice daily. New data typically becomes available 3-5 hours after the model run time.
What forecast fields are available?
We provide: Temperature at 2 meters, 850 hPa and 500 hPa levels; Precipitation (rain, snow); Wind Speed at 10 meters; UV Index; and Geopotential Height at 500 hPa. You can also overlay wind arrows and isobars on the maps.
What are ensemble forecasts?
Ensemble forecasts run the same weather model multiple times with slightly different initial conditions to capture forecast uncertainty. Instead of one prediction, you get a range of possible outcomes. We offer GFS ensembles (31 members), ECMWF ensembles (51 members), and AIFS ensembles. Click any location on the ensemble pages to see the spread of forecasts.
What is CAPE and Lifted Index?
CAPE (Convective Available Potential Energy) measures atmospheric instability and thunderstorm potential. Higher values indicate stronger potential for severe weather. Lifted Index is another stability indicator; negative values suggest unstable conditions favorable for thunderstorms.
How does the Solar Power Calculator work?
The solar calculator estimates daily energy production (kWh) for your photovoltaic panels based on location, panel specifications (number, wattage), tilt angle, and orientation. It uses GFS forecast data for cloud cover, atmospheric clarity, and solar geometry to predict output for the coming days.
How does the Wind Turbine Calculator work?
The wind turbine calculator estimates power output based on your location and turbine specifications (rated power, rotor diameter, hub height). It uses forecast wind speeds and a standard power curve to predict energy production over the forecast period.
What does the Live Weather Radar show?
The Live Radar page displays animated precipitation (rain/snow) imagery and infrared satellite cloud data for approximately the past two hours, updated every 10-15 minutes. It helps you see current weather conditions and their recent movement.
How do I use the forecast map?
Select a model and field from the sidebar, then use the time slider at the bottom to step through forecast hours. Click anywhere on the map to see a detailed 8-day point forecast. You can search for cities using the search box, toggle wind arrows and isobars, and switch between Celsius and Fahrenheit.
Can I change the temperature units?
Yes, use the °C/°F toggle in the sidebar to switch between Celsius and Fahrenheit. Your preference is saved automatically.
Is ngmeteo.com free to use?
Yes, ngmeteo.com is completely free. We support the site through non-intrusive advertising.
What languages are supported?
The interface is available in English, French, Greek, German, Spanish, and Italian. Use the language selector in the header to switch.