Previous submissions of this topic include:

http://news.ycombinator.com/item?id=2900450 (google.com)

http://news.ycombinator.com/item?id=2899913 (googleblog.blogspot.com)

http://news.ycombinator.com/item?id=2899895 (google.com)

http://news.ycombinator.com/item?id=2899641 (google-latlong.blogspot.com)

The last of these has the discussion.

oops...my mistake!

Weather forecasts in my calendar would be very useful.

That has been possible for a long time in Google Calendar: http://www.google.com/support/calendar/bin/answer.py?answer=...

Unfortunately that only works for a static location, and not in the mobile calendar.

I'm looking for weather information for where my appointments show I will be.