@Suty Thanks for the fast reply! This one, hosted by University of Wyoming, is the best one in my opinion, and would allow for easy extraction:
https://weather.uwyo.edu/upperair/sounding.shtml

You also have this one:
https://tracker.sondehub.org/

As backups, you can rely on:
https://www.ncei.noaa.gov/products/weather-balloon/integrated-global-radiosonde-archive
https://www.ogimet.com/sond.phtml.en

I hope that'll be useful.

Hi, first off just want to thank you for maintaining that great platform, it's my go to tools and I use it all the time. One bit of feedback though: the radiosonde sounding data is often way behind other sources. Sometimes a sounding that should already be up takes hours or even days to show.
Example: Tanay in the Philippines (WMO 98433). I can see fresh 00Z/12Z soundings on the University of Wyoming archive, but on Windy the latest Tanay sounding is 11 days old!

There are probably a few ways to fix it. Maybe pulling from more than one source so a slow feed doesn't hold everything up? Either way, having the latest soundings as soon as they drop is important to my workflow so I hope this can be addressed.