The answer to 'why is my window dirty' is that windows can become dirty due to a variety of reasons, including dust, dirt, grime, and even hard water stains. Common causes include environmental factors like pollution, weather conditions, and even the materials used in window construction.
Windows may appear hazy, streaky, or have visible buildup on the glass. This can impact visibility and the overall appearance of your home. To clean windows effectively, you'll need to identify the specific type of dirt or residue and use the appropriate cleaning methods and products.