A fog bow is a similar phenomenon to a rainbow; however, as its name suggests, it appears as a bow in fog rather than rain. Because of the very small size of water droplets that cause fog—smaller than 0.05 millimeters (0.0020 in)—the fog bow has only very weak colors, with a red outer edge and bluish inner edge.

Darts fan Nigel Panton in fancy dress ahead Day Eight of the William Hill PDC World Darts Championships at Alexandra Palace on December 28, 2014 in London, England. (Photo by Jordan Mansfield/Getty Images)

Guillermo Rodriguez and Sports Illustrated Swimsuit Issue cover model Kate Upton arrive at Club SI Swimsuit hosted by the Pure Nightclub at Caesars Palace at the Pure Nightclub at Caesars Palace on February 16, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

UK Big Brother star Chloe Khan washes her Land Rover wearing a bikini and hot pants in Borehamwood, England on September 22, 2016. (Photo by Palace Lee)

A woman poses for photographs after Gucci Cruise 2024 collection fashion show at the Gyeongbok Palace in Seoul, South Korea on May 16, 2023. (Photo by Kim Soo-Hyeon/Reuters)

SKY SPORTS presenter Anna Woolhouse has stunned in a glamorous outfit ahead of Saturday's World Darts Championship action at Alexandra Palace in London in the last decade of December 2024. (Photo by @woolyanna1/Instagram)

A pigeon sits on the cap of an Indonesian military personnel during a ceremony marking the country's 80th Independence Day, at the Presidential Palace in Jakarta, Indonesia, on August 17, 2025. (Photo by Ajeng Dinar Ulfiana/Reuters)

A mahout rides on painted elephant as they march during a procession near the Grand Palace to pay their respects to Thailand's former queen Sirikit in Bangkok on November 27, 2025. (Photo by Chanakarn Laosarakham/AFP Photo)