The actual color of the sky can vary depending on various factors such as atmospheric conditions and the position of the observer. Generally, the color of the sky is perceived as blue during daylight hours under normal conditions.
The blue color of the sky is primarily due to a phenomenon called Rayleigh scattering. When sunlight passes through the Earth's atmosphere, the shorter blue and violet wavelengths are scattered more compared to the longer wavelengths such as red and orange. This scattering of shorter wavelengths of light by the molecules in the atmosphere causes the sky to appear blue to our eyes.
However, it's important to note that the color of the sky can change throughout the day. During sunrise and sunset, when the sun is near the horizon, the light has to pass through a larger portion of the Earth's atmosphere, which scatters even more of the shorter wavelengths. As a result, the sky often appears to be filled with shades of red, orange, and pink during those times.
Additionally, factors like pollution, atmospheric particles, and weather conditions can also affect the color of the sky. For instance, a hazy or cloudy atmosphere can make the sky appear gray or dull.
In summary, the sky appears blue during normal daylight conditions due to the scattering of shorter wavelengths of light. However, its color can change based on atmospheric conditions and the position of the sun, resulting in various hues ranging from blue to red, orange, and pink.