This plugin is written for recreational VFR flight planning.
Use the weather picker to plot a flight plan.
You can also upload a plan. (Upload formats: .gpx, .ep1, .efp. or Download as: .gpx.)
Airports (found in the Windy Airports layer) can be used to add a waypoint. Clicking on an airport or dragging the picker close to an airport will show the airport ICAO code above the picker. Clicking on this will open the airport information pane.
Sliding the aircraft icon along the route will set the Windy map to the appropriate time and altitude.
Altitude, speed, time and date can be set for selected legs. You can select "agl" or above "msl".
Long press-or double-click on a row in the flight plan to select single leg.
Click the "Read Wx" to load the weather data for your route. Ground speed and corrected ETE are then calculated.
If you change the position, altitude, speed or time of waypoints, click the "Read Wx" button again to update Wx data.
"Allow Drag" button allows dragging the waypoints. "Lock Drag" again to prevent dragging accidentally.
In the Settings menu: Alert values for different overlays can be set. The alert sections will then be marked with red along the route after "Read Wx" has run.
Airspace data from openAIP.net has been translated to geojson and can be loaded in the Airspace menu. Do not load too many countries.
The "R Planner" button opens the Windy Route Planner. Altitude will be displayed in the Route Planner. The flight plan cannot be modified while the Route Planner is open.
I am experimenting with Route Planner for touch devices.
Selecting local time in settings will show local time in the flight plan with the timezone offset. This is corrected for DST.
Selecting Timezone will show the Timezone name in the information marker and will highlight the timezone boundaries as the aircraft icon is moved.