Weather | Introduction
Introduction
What is the weather like where you are today? WeatherThe state of the troposphere at a particular time and place. is the state of the troposphere at a particular time and place. The troposphereThe lowest layer of Earth's atmosphere, ranging to an altitude of about 9 miles (15 kilometers) above Earth's surface. is the lowest layer of Earth's atmosphere, ranging to an altitude of about 9 miles (15 kilometers) above Earth's surface.