Board Thread:New Features/@comment-24739709-20150518230347/@comment-24473195-20150816074745

SethFu wrote: We just found that values of 0 are ignored by Portable Infoboxes, and treated as unspecified parameters. This is detrimental since in many cases it can be useful to display a value of 0 in infoboxes.

Related thread and workaround: Thread:894261 The easiest would be to use the default tag:

Then whenever the temperature is 0 people can leave it blank and it would automatically set it to 0. Although it is odd that it doesn't display the image but does display the number.