[werk_ag]

Well, don't know if that will be a good idea, the readings of the temp / hum sensor will be largely influenced by the heat produced by the Nano and the voltage regulator.
Actually the temperature reading isn't used by the software for any calculation, but the readings of the air moisture are used on the calculations of the PM2.5
Current investigations also seem to reveal that air moisture affects CO2 readings, so in future software releases, the RH may also be used by the CO2 calculations.