Storm Ophelia: Why skies are turning yellow across Scotland
The phenomena is the result of smoke from Iberian wildfires and dust from the Sahara.
Skies in parts of Scotland have turned a strange shade of yellow, while in others people have reported seeing a blood red sun through the clouds.
The strange phenomena are the result of smoke and dust particles spread by the aftermath of Hurricane Ophelia, which arrived in the UK on Monday.
They are a combination of smoke drawn from deadly wildfires raging across the north of Portugal and Spain, and dust dredged up from the Sahara.
STV weather presenter Sean Batty said: "Something that's quite interesting about this storm is it's been tracking up from the south and if you look outside there's a sort of yellowish, orangey tinge in the air at the moment.
"The reason for that is actually it's pulling in some Saharan dust and, not only that, we've got large wildfires across Portugal and Spain.
"We're actually drawing in smoke from those as well so this is a pretty incredible storm."
Passengers have also reported smelling smoke in the cabin of planes travelling across the south of Ireland but it is not harmful.