What is the hottest planet in the Solar System?

Venus is considered the hottest planet in the solar system due to its extremely thick atmosphere composed mainly of carbon dioxide, with clouds of sulfuric acid. This dense atmosphere creates a strong greenhouse effect, trapping heat from the sun and causing a runaway greenhouse effect. As a result, Venus experiences a scorching average surface temperature of about 900 degrees Fahrenheit (475 degrees Celsius), which is hotter than even Mercury, the closest planet to the sun. The extreme heat on Venus is responsible for its uninhabitable conditions, making it the hottest planet in the solar system.