The answer to 'why is my window moldy' is that mold growth on windows is often caused by excessive moisture, poor ventilation, or a lack of cleaning. Mold thrives in damp environments and can appear as discolored spots or fuzzy growths on window frames and seals.
Common causes include high indoor humidity, leaks or condensation around the windows, and not cleaning the windows regularly. Symptoms include visible mold growth, musty odors, and potential health issues for those sensitive to mold. Solutions include improving ventilation, reducing humidity, promptly fixing any leaks, and regularly cleaning and disinfecting the windows and surrounding areas.