Home Assistant

This is an automated archive made by the Lemmit Bot.

The original was posted on /r/homeassistant by /u/Minechris_LP on 2025-06-10 12:58:44+00:00.

Raw input of humidity sensors

Above you can see my humidity sensors at home, but I always found it difficult to extract usful event from such noisy data, because the outside humidity affects it so much. Because I have some knowledge in data analysis, I have experimented a bit and found something very useful, I would like to share for the community.

Humidity average of all sensors

At first I created a helper to calculate the average humidity from all sensors. Then I made another Template-helper that took the difference (humiditiy - average humidity):

{{(states('sensor.sensor_bathroom_humidity')|float)- (states('sensor.appartment_humidity_average')|float)}}

How I made my Template-Helper

This resulted in every room having relative humidity sensors:

Humidity sensors with substracted humidity average

This way I can now easily see spikes in humidity in the kitchen (blue) and the bathroom (yellow). This worked so well, I can detect water boiling for a tea from 2 meters away from my sensor location.

Final sensors of kitchen (blue) and bathroom (yellow) humidity only