THe Myth: Many people assume mold cannot grow in dry climates, but even in arid regions, localized moisture from leaks, condensation, or flooding can create the perfect conditions for mold.

The Truth: While it’s true that mold thrives in humid environments, it doesn’t need high humidity to grow—it just needs a moisture source. Even in dry climates, mold can develop in areas with plumbing leaks, roof damage, condensation, or poorly ventilated spaces where moisture becomes trapped.

For example, air conditioning units, evaporative coolers, and water pipes can create condensation in an otherwise dry home, leading to hidden mold growth inside walls or ceilings. Additionally, flooding or water intrusion from storms—even in a desert climate—can leave behind moisture that lingers long enough for mold to take hold.

Homes in dry regions often seal tightly to maintain indoor cooling, which can inadvertently trap moisture inside. Without proper ventilation, drainage, or insulation, areas like basements, crawl spaces, and bathrooms can still experience mold issues.

The key takeaway is that climate alone does not prevent mold—moisture control does. Even in the driest locations, addressing leaks, condensation, and indoor humidity is essential to keeping mold at bay.