Uploaded January 2025 | Updated September 2026, 2 weeks ago
Cladosporium is a common mold that can often be found both indoors and outdoors. There are numerous species of Cladosporium and many produce fungal colonies that can appear as olive, brown, or black in color. Naturally occurring Cladosporium spores in the outdoor environment are present year-round in many areas.
The Centers for Disease Control and Prevention (CDC) claims that Cladosporium, Pencillium, and Aspergillus are the most common indoor molds. Indoors, Cladosporium is often found in humid environments, on wet surfaces, and in properties that have suffered water damage.
Indoors or outdoors, Cladosporium is known to be a common cause of allergies. Exposure to elevated concentrations could also trigger an asthma attacks in some asthmatics. Inhaling Cladosporium, or other types of fungi, could even act as a respiratory irritant, or be a concern for people are already suffering from various respiratory diseases.
Cladosporium has also been recognized as a human pathogen, although infections are not common. These infections can occur as skin or toenail infections, or sinus and lung infections. While these infections could occur in anyone, they typically impact people with a weakened immune system. This is why those with a weak immune system should consider avoiding indoor environments with high levels of Cladosporium or many other types of mold.
These are just some a few of the many things to know about Cladosporium and potential exposure risks. To learn more about this or other indoor air quality, building science, industrial hygiene, environmental, health, or safety issues, please visit the websites shown below.
Clark Seif Clark csceng.com
EMSL Analytical, Inc. emsl.com
LA Testing latesting.com
Zimmetry Environmental zimmetry.com
CTSI ctsiweb.com
Healthy Indoors Magazine healthyindoors.com
Cladosporium is a common mold that can often be found both indoors and outdoors. There are numerous species of Cladosporium and many produce fungal colonies that can appear as olive, brown, or black in color. Naturally occurring Cladosporium spores in the outdoor environment are present year-round in many areas.
The Centers for Disease Control and Prevention (CDC) claims that Cladosporium, Pencillium, and Aspergillus are the most common indoor molds. Indoors, Cladosporium is often found in humid environments, on wet surfaces, and in properties that have suffered water damage.
Indoors or outdoors, Cladosporium is known to be a common cause of allergies. Exposure to elevated concentrations could also trigger an asthma attacks in some asthmatics. Inhaling Cladosporium, or other types of fungi, could even act as a respiratory irritant, or be a concern for people are already suffering from various respiratory diseases.
Cladosporium has also been recognized as a human pathogen, although infections are not common. These infections can occur as skin or toenail infections, or sinus and lung infections. While these infections could occur in anyone, they typically impact people with a weakened immune system. This is why those with a weak immune system should consider avoiding indoor environments with high levels of Cladosporium or many other types of mold.
These are just some a few of the many things to know about Cladosporium and potential exposure risks. To learn more about this or other indoor air quality, building science, industrial hygiene, environmental, health, or safety issues, please visit the websites shown below.
Clark Seif Clark csceng.com
EMSL Analytical, Inc. emsl.com
LA Testing latesting.com
Zimmetry Environmental zimmetry.com
CTSI ctsiweb.com
Healthy Indoors Magazine healthyindoors.com
