Sometimes in NOTAMs Windy substitutes � character for some others. This is U+FFFD character, that is, Unicode Replacement Character. It is used when conversion from another character set fails. The trouble is obvious in US DOD procedural NOTAMs that use left and right quotes, meaning “ and ” characters. They are all substituted by � character. Other characters may be affected too.

For example this from Krakow-Balice (KRK):

Same NOTAM looks like this on notams.faa.gov:

Possibly specific to US DOD procedural NOTAMs.

I am using Firefox ver. 133 on Linux Mint ver. 21.3.

Looks like this winter will come like a tank!