Absence of tall buildings. Tall buildings in cities can also block out the view of the stars. This is because the buildings can be so tall that they cast a shadow over the stars, making them difficult to see.
Clearer air. The air in rural areas is often clearer than the air in cities. This is because there are fewer pollutants in the air, such as smoke and dust, which can scatter and reflect light, making it difficult to see stars.
Less moisture in the air. The air in rural areas is often less humid than the air in cities. This is because there are fewer sources of moisture in rural areas, such as rivers and lakes. Water vapor in the air can absorb light, making it difficult to see stars.