My sky is grey

whatever happen to the sky that used to be blue?
When it rains, there is thunder and lightning. when the rain stops, there's usually a rainbow.
It used to be sunny and blue most of the time.
Suddenly, my sky is grey yet there is no rain, no thunder, no storm. I cant see the sun anymore.
What is the world turning into, what is my world turning into?
Will my sky ever clear up ? is the original sky grey?