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Vog forms when sulfur dioxide (SO₂) and other volcanic gases react chemically with atmospheric moisture, oxygen, sunlight, and dust.

Breezy and more stable trade wind conditions should return by Monday night. Skies may be a bit cloudier, but showers should favor windward and mauka areas through Thursday. Another upper level ...

Volcanic emissions and light winds from the east-southeast will cause vog to hang over parts of the state for most of the day. Today marks a transition in the weather pattern. Gentle to moderate ...

HONOLULU (KHON2) – Light winds will prevail with nighttime land and daytime sea breezes common across much of the state through the rest of the weekend. The front to the west will edge closer to ...

(USGS via AP) The Hawaiʻi Department of Health is urging residents and visitors to take precautions as elevated volcanic gas emissions from Kilauea continue to produce vog and poor air quality ...

When the pressure from gas and lava inside a volcano gets too high, an eruption can create explosive or oozing lava flows, flying ash and rocks, harmful gases, vog (volcanic smog), and other ...

HONOLULU (Island News) -- Light winds and vog will impact the islands' Aloha Friday. Tonight, mostly clear skies will appear. Lows are in the upper 60s. Aloha Friday, partly cloudy skies with ...

Gas emission levels were still higher than normal, however, and Hilo residents got a mouthful of vog Sunday and Monday after a shift in the wind brought a southerly breeze. According to ...

KILAUEA, Hawaii — Have you ever heard of "vog"? It may sound like a new social media trend, maybe a a dance craze, or a new online fashion website. But it is not. Vog is actually "volcanic smog." ...