Thanks for the reply.
Tiles look good in your link.
The only minor thing I can see is that there's no way to mix metric & imperial units eg to use both MPH for wind & MM for rainfall or have I missed that option.
That's correct. Currently you can use metric for everything (wind, rainfall, pressure), or imperial. Would you want metric for everything, but MPH for wind; or imperial for everything, but metric for rainfall/snowfall? Or something else?