# Mold and Humidity
**URL:** https://boards.straightdope.com/t/mold-and-humidity/249474
**Category:** Factual Questions
**Created:** [June 9, 2004, 4:31pm UTC](https://boards.straightdope.com/t/mold-and-humidity/249474 "2004-06-09T16:31:29Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@dalej42](https://boards.straightdope.com/u/dalej42)
#### Post date: [June 9, 2004, 4:31pm UTC](https://boards.straightdope.com/t/mold-and-humidity/249474/1 "2004-06-09T16:31:29Z")
This is NOT a homework question.
is heat the ONLY thing which influences how quickly mold will grow on a loaf of bread? When I lived in Florida, I could never leave a loaf of bread out of the fridge. The mold would grow in a day. However, the house was air conditioned.
In Arizona, I could leave bread out without it molding quickly.
The question is:
If the same loaf of bread was left out at the same room temperature at 10% relative humidity and 75% relative humidity, would the bread mold at the same rate?
Anything else besides heat influence the formation of mold?
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### Author:  [@Finagle](https://boards.straightdope.com/u/Finagle)
#### Post date: [June 9, 2004, 5:37pm UTC](https://boards.straightdope.com/t/mold-and-humidity/249474/2 "2004-06-09T17:37:02Z")
I’d guess you have more mold spores in the air in Florida (or any other humid tropical environment). So even though the house is temperature and humidity controlled, there’d be a lot more colonies starting up.
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### Author:  [@Squink](https://boards.straightdope.com/u/Squink)
#### Post date: [June 9, 2004, 6:43pm UTC](https://boards.straightdope.com/t/mold-and-humidity/249474/3 "2004-06-09T18:43:23Z")
Molds _love_ humidity!