What atmospheric elements are responsible for scattering light across a broader spectrum, often leading to a lighter or whiter sky in summer?

Answer

Larger particles such as dust, pollen, smoke, and pollution (aerosols)

When compared to the small gas molecules, larger atmospheric aerosols present in warmer seasons scatter light across a wider range of wavelengths, which washes out the deep blue appearance, making the sky seem lighter or hazy.

What atmospheric elements are responsible for scattering light across a broader spectrum, often leading to a lighter or whiter sky in summer?
lightseasoncolorskyatmosphere