@Ondřej-Šutera Many thanks Ondrej.
I'll continue fault-finding on my side. (It must be something I'm doing wrong).

@Ondřej-Šutera
Hi Ondrej, yes, that is indeed my station. All the data currently present (at least for the last couple of weeks) has been "GET" sent to Windy via the API development software POSTMAN. This allowed me to prove my string structure. I am confident that what I'm sending (via the Arduino) is correct.

After sending a test string, I do receive an 'HTTP/1.0 308 Permanent Redirect' reply, along with a 'Location: https://stations.windy.com:443/pws/update/xxxAPIxxx?winddir=18
AT+CIPSHUT
Yet nothing presents on the Windy site.?

Hi, after extensive hardware redevelopment on my Arduino based pws, I'm trying to reestablish data postings to Windy. It used to work!
Are you able to see if my station f075fa74 is pushing data.

Many thanks