However, it's important to note that their altitude can vary depending on factors like geographic location, weather conditions, and the specific type of stratus cloud.

Here's a breakdown:

* Stratus: These are the most common type of stratus cloud and are typically found at altitudes between 500 and 2,000 meters (1,600 and 6,500 feet).

* Stratocumulus: These are puffy, gray or white clouds that form in patches or layers and are found at altitudes between 500 and 2,000 meters (1,600 and 6,500 feet).

* Nimbostratus: These are dark, gray, rain-producing clouds that can extend up to 2,000 meters (6,500 feet).

So, while the general rule is that stratus clouds are low-level, their exact altitude can vary.