Sahara dust has been causing a play of colors in the sky in southern Germany since Tuesday.
According to the German Weather Service (DWD), the whole of Baden-Württemberg is affected.
Southwest winds also carried desert sand to Lower and Upper Bavaria on Tuesday and bathed Munich and the Alps in a brownish or orange light.
Even on Thursday, the Sahara dust might not have blown away.
As the name suggests, the Sahara dust comes from the Sahara, according to the DWD.
The dust mainly came from an area south of the Atlas Mountains and southwest of it.
According to the DWD, Saharan dust occurs much more frequently in spring and summer than in autumn and winter.
"We count up to 50, 60 mostly smaller events per year over Germany.
Most of them are not noticed," said the DWD.
But this time it's different.
Light precipitation leads to "blood rain" in the weather, with the desert sand being washed out.
The water then turns brown.
The sand then becomes visible on cars or garden furniture, for example.
According to the DWD, the concentration of Saharan dust should decrease significantly by Friday.