Vog is a form of air pollution that results when sulfur dioxide and other gases and particles emitted by an erupting volcano react with oxygen and moisture in the presence of sunlight. The word is a portmanteau of the words "volcanic" and "smog". [1] .

The meaning of VOG is air pollution caused by volcanic emissions.

VOG definition: 1. a type of air pollution that is a mixture of ash (= the soft grey or black powder that is left…. Learn more.

Vog (volcanic smog) is a visible haze comprised of gas and an aerosol of tiny particles and acidic droplets created when sulfur dioxide (SO2) and other gases emitted from a volcano chemically interact with sunlight and atmospheric oxygen, moisture, and dust.

Mar 31, 2025 · Volcanoes spew ash, a type of particulate matter air pollution, into the air for miles downwind of the eruption. They also produce and release gases mixed with water and tiny particles that form this pollution that we see and call vog. Vog can be harmful, so learn more to take steps to protect yourself and your family. What Is in Vog?

Vog is a hazy mixture of sulfur dioxide gas (SO 2) and particles (PM 2.5) originating from Kīlauea Volcano. Sensitivity to vog varies among people, so all people need to take responsibility to protect themselves and dependent family members, as necessary.

Vog poses a health hazard by aggravating preexisting respiratory ailments. Sulfur dioxide (SO2) gas can irritate skin and the tissues and mucous membranes of the eyes, nose, and throat, and can penetrate airways, producing respiratory distress in some individuals.

What does the noun vog mean? There is one meaning in OED's entry for the noun vog. See ‘Meaning & use’ for definition, usage, and quotation evidence. This word is used in U.S. English. How common is the noun vog? Fewer than 0.01 occurrences per million words in modern written English. How is the noun vog pronounced?

The term ‘vog’ refers to the hazy air pollution caused by the volcanic emissions from Kīlauea volcano, which are primarily water vapor (H 2 O), carbon dioxide (CO 2), and sulfur dioxide (SO 2) gas.

Volcanic smog, or vog, consists of fine droplets containing volcanic gas like sulfur that can cause irritation of the eyes, throat and respiratory tract.