What is the density of the ionosphere?

The density of the ionosphere varies significantly with altitude and time of day, typically ranging from about 10^4 to 10^6 electrons per cubic meter. This layer of the Earth's atmosphere, located between approximately 30 miles (48 km) and 600 miles (965 km) above the surface, contains ionized particles primarily due to solar radiation. During the day, ionization increases due to solar energy, leading to higher densities, while at night, the density decreases as ionization diminishes.