Fog covers a windmill field close to Pamplona, Navarra, northern of Spain, 12 November 2020. (Photo by Jesús Diges/EPA/EFE)





A cranes flies as others gather during the migration season on a foggy morning at Hula Nature Reserve, in northern Israel on November 17, 2020. (Photo by Ronen Zvulun/Reuters)





A woman walks her dog at the Baltic Sea in Scharbeutz, Germany, Monday, October 12, 2020. (Photo by Michael Probst/AP Photo)





Mist in the fields near Landdowror, Wales, Britain on October 17, 2020. (Photo by Rebecca Naden/Reuters)





Mist hangs over Pitlochry, Scotland, Britain on October 17, 2020. (Photo by Russell Cheyne/Reuters)





A man fishes near Troitskiy bridge on a foggy morning in Saint Petersburg, Russia on November 1, 2020. (Photo by Anton Vaganov/Reuters)





A man walks on a pier at lake Ammersee in Stegen, southern Germany, during heavy fog with temperatures around three degrees Celsius on November 10, 2020. (Photo by Christof Stache/AFP Photo)





A squirrel runs in the foreground as the London Eye Ferris wheel stands newly closed to visitors and shrouded in fog, on the first day of Britain's second lockdown designed to save its health care system from being overwhelmed by people with coronavirus, in London, Thursday, November 5, 2020. (Photo by Matt Dunham/AP Photo)





Buildings are seen as fog blankets the city of Skopje, Macedonia October 28, 2020. Skopje high air pollution in winter months made its residents more vulnerable to respiratory diseases including COVID-19. (Photo by Ognen Teofilovskithe/Reuters)





The Forth Bridge is covered by fog in the Firth of Forth, South Queensferry on November 8, 2020. (Photo by Jane Barlow/PA Images via Getty Images)





Early morning fog covers the landscape near Salgotarjan, Hungary, 10 November 2020. (Photo by Peter Komka/EPA/EFE)





The Peace Monument, and the US Capitol behind it, is enshrouded in fog in Washington, DC, USA, 21 October 2020. Lawmakers are st​ruggling to come up with another stimulus bill before the election. (Photo by Jim Lo Scalzo/EPA/EFE)





A person walks their dog in the morning mist at sunrise in Greenwich Park in south London on November 9, 2020. (Photo by Daniel Leal-Olivas/AFP Photo)





Coniferous trees rise out of the morning mist at sunrise in Bernbeuren, Bavaria on October 19, 2020. (Photo by Karl-Josef Hildenbrand/dpa)





A view of morning mist lifting from a lake are seen in Yi county, in eastern China's Anhui province on October 30, 2020. (Photo by AFP Photo/Stringer)