@JahFyahh - I still haven't managed to et round to it. I've been really busy since this project and its still hectic here. I'm sure i read a few reviews somewhere, here or google. Not sure.
My next issue is the humidity seems to be off. It has read as high as 115% humidity. Is this normal or should I be considering a correction? If so, how would I enter a correction. Its a little odd considering it states that the accuracy is much tighter than that.
I hate to disappoint you @micah but @Mike-Musskopf has got a point:
MQ* sensors are power hungry. You may want to connect everything up to 240V via a small PSU. There is a big thread on mysensors about air quality detection.
DHT is not the best sensor for a battery application. Please check BME280 (pressure, temp and hum) or Si7021 (temp and hum) - these would be my favourite sensors for low power consumption.
Small tip - your Arduino Pros must be 3.3V and not 5V for the battery usage.
