Why does sunlight stunt a mold growth?

Sunlight stunts mold growth primarily due to its ultraviolet (UV) rays, which can damage the DNA of mold spores and inhibit their reproduction. Additionally, sunlight increases temperature and decreases humidity levels, creating an unfavorable environment for mold. The heat can also lead to faster drying of surfaces, further reducing moisture availability, which molds need to thrive. Thus, exposure to sunlight acts as a natural deterrent against mold proliferation.