clock applet not showing weather

[Tim]

Lately, across several different Linux installs the MATE's clock applet
that shows the time and date on the title bar has been unable to show
the local weather.

Looking in the journal I see lots of this, which I presume is related:

clock-applet[9632]: Failed to get METAR data: 308 Permanent Redirect.

It still does that even if I switch off the options to show temperature
and weather.  Something I consider quite odd.

Does anybody else see the same thing?

Not knowing the URL that the thing uses, I can't manually have a look
at it to see what's happening.