An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Climate Change Adaptation Resource Center (ARC-X)

Climate Adaptation – Indoor Fungi, Mold and Health

Moisture and mold -Problems in a houseExtreme weather conditions associated with climate change, such as more frequent and intense storm events, may lead to breakdowns in the physical barriers between outdoor and indoor spaces of homes and buildings. The deterioration of barriers may allow water and moisture to permeate. Damp conditions are ideal for the growth of indoor fungi and mold, increasing the likelihood of occupants’ exposure and resulting health effects.

Exposure to indoor fungi and mold may trigger symptoms similar to hay-fever, including:  

  • Headaches
  • Sneezing
  • Runny nose
  • Red eyes
  • Skin rashes

Those who are allergic to indoor fungi and mold may experience asthma attacks.

Explore More About Adaptation – Indoor Fungi, Mold and Health