LM35 - Affected by Possible Radiated Noise using XBee

Good day, Arduino folks!

I have a simple question. Should an XBee w/ Xbee Explorer mounted on a lower PCB induce radiated noise on an LM35 located at the top of it? The LM35 will also be soldered to another [or upper] PCB by the way. I'm quite worried it would on the final design of my prototype for a wireless sensor network application.

If you guys would suggest putting the LM35 on the same PCB as the XBee, I need it mounted at least 15 mm away from the bottom part of the lower PCB. It's very important to be that way.

Thank you!