As indicated by Bryan, the sensor only measures temperature and relative humidity. A dew-point is calculated using these two values.
The mold probability is an interpretation of the dew-point. Typically dew-points > 66F are considered to be high-risk for mold growth.
One can calculate dew-point using the average of existing sensors that measure temperature and relative humidity.
Some months ago @JohnRob described/posted an app to calculate dew-point using input from temperature/humidity sensors, but I can't find it right now - so I'm tagging him in the hope that he will see this and post a link below.
I use Node-RED for my automation and I wrote a function to calculate the dew-point. And use its output to trigger automations (eg. turning on dehumidifier) if the dew-point exceeds 62F. If you're interested, my sequence is pasted below:
DP calculator
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