A view of Istanbul as thick mist blankets over the city during the early morning hours, Turkey, Oct. 25, 2020.

With the temperature dropping, Istanbul and the Marmara region in general have been waking up to fog for several days.

Municipality workers cleaning the promenade in Istanbul's Eminönü district, Oct. 25, 2020.

A ferry docked in Istanbul's Eminönü district, Oct. 25, 2020.

Due to the thick fog, the ferry service of the metropolis has been canceled.

A street vendor in Istanbul's Eminönü district, Oct. 25, 2020.

People fishing on the Galata bridge in Istanbul's Eminönü district, Oct. 25, 2020.

An aerial view of Istanbul blanketed in fog, Oct. 25, 2020.

The sun rising with one of Istanbul's bridges barely visible due to thick fog, Oct. 26, 2020.

The Bosporus covered in mist in the early morning hours of Oct. 26, 2020.

The Ortaköy Mosque in Istanbul that has been covered in thick mist on Oct. 26, 2020.

An aerial view of Istanbul as the fog slowly dissipates on Oct. 25, 2020.