why is the early mornong sky red to pink and the mid day sky blue?

Answer 1

This is an interesting question, with a subtle asymmetry when one compares dawn and evening light.

The path length of sunlight through the Earth's atmosphere to your general area is LONGER in the early morning (and in the evening, for that matter), than at mid day. The blue colour of the sky itself is due to the fact that the atmosphere preferentially scatters blue light.

In the early morning (or late evening) at your own position, far more blue light has been scattered along that glancing path through the atmosphere. Consequently, the light then reaching your vicinity appears reddened.

Incidentally, there is an asymmetry between dawn light and sunset in that in most places, sunsets appear "ruddier" than sunrises. This is because the evening path length passes through an atmosphere where the activities of the day by humans, industry, animals, heat-forced atmospheric convection etc. have stirred up dust into the atmosphere, causing more scattering. On the other hand, dawn light passes over regions that have only recently woken up and where temperature differentials have equalised during the night, hence convection has dise down also. Because of all this lessened activity and therefore less atmospheric contamination, there has been less scattering in that direction.

Live long and prosper.

Answer 2

It has to do with the fact the sun is a red star that is why the light is and as the sun rises the water or ice crystals begin to re-fact the light to the pink and that is why we have blue sky's.