Mold Risk Score Calculator – Nature Observer

Indoor humidity (RH %)

If you don’t know, measure with a hygrometer.

Indoor temperature

Choose unit on the right.

Temperature unit

We convert internally.

Risk factors

Poor ventilation Drying laundry indoors Cold outside wall / condensation Recent leak / damp spot

Select what applies to your space.

Precision

Rounding for outputs.

Output style

Detailed adds practical actions.