giradman said:Hello and welcome to the forum!
I'm assuming that you are talking about a small superscript zero representing a temperature degree using the regular native iPad keyboard (KB) - correct?
Well, give this a try - on the 'ABC' KB, press on the number 'zero' - 2 options will appear, slide your finger to the upper choice on the right - hold & release - this should provide your need - let us know if that worked! Good luck.