A huge haze of orange dust has descended on Athens as clouds of dust have blown in from the Sahara desert.
According to officials, this is one of the worst episodes to hit Greece since 2018.

Greece had already been hit by similar clouds in late March and early April, which also covered areas of Switzerland and southern France.
The sky is expected to clear on Wednesday, Greece's meteorological service says.
Air quality has deteriorated in many areas of the country and this morning the Acropolis in Athens was no longer visible due to dust. The cloud has reached as far north as Thessaloniki.
Greeks with respiratory problems have been asked to limit the time they spend outside, wear protective masks and avoid physical exercise until the dust clouds clear.
The Sahara emits 60 to 200 million tons of mineral dust annually.

Most of the dust quickly descends to Earth, but some of the smaller particles can travel great distances, sometimes reaching Europe.
The atmosphere mainly in southern Greece has become stifling due to the combination of dust and high temperatures.

Meteorologist Kostas Lagouvardos compared the view from a meteorological station on the planet Mars.
"Yesterday, the fire service reported 25 fires in the last 24 hours. A fire broke out near a naval base on the island of Crete - where temperatures soared above 30 degrees Celsius and homes and a kindergarten had to be evacuated, according to local reports.