Hi, I'm living in the middle of France, using a Davis Vantage Vue, uploading data to the WeatherUnderground and AWAKAS, uploading is done through the excellent German package Meteobridge which runs on a very small stand-alone server. Contact the developer of this package to see how to incorporate your website for uploading. To differentiate between PWS's and the rest you might include an extra layer. I would be willing to upload to Windy as well.
Bart / meteo18.fr