Yes ambient temps can be partially controlled by surface temps, insulation and air flow patters. Room temps have a huge impact on ambient temps but that is not the only thing. It is the easiest way but it is a killer for people with small collections or (like me!) have poor insulated homes that loose heat as fast as you add it.

Probed thermometers are the easiest way. In my enclosures I check hot temp cool temp (inside the hides) and the ambient air temps and humidity.