The sky is cloudy.
The sky is darkened.
The sky is ominous.
The plane is in flight.
The plane is alone.
the sky is full of clouds
the clouds are big
the clouds are fluffy
the clouds are puffy and white
the sky is grey
the sky is hazy
Clouds in the sky
blue sky with many clouds
high clouds above the jet
an airplane flies through a cloudy sky behind a large plane