Vog Covers Islands; More Humid Weather Ahead

Keep the fans and air conditioners running. Tradewinds are still out of the forecast for the next several days.
Light winds statewide have also resulted in increased volcanic haze, or "vog," spreading from the Big Island to the rest of the state.
A cold front approaching the islands from the northwest has pushed the tradewind-producing high pressure ridge over the state, resulting in light winds. At the same time, winds just ahead of the front are southwesterly Kona winds.
Because of this, winds near the Big Island (furthest from the front) are primarily from the east, while winds near Kauai are more southwesterly. The surface wind flow curving northward from the Big Island is able to draw up the vog to the smaller islands of Kauai and Oahu. There's also abundant tropical moisture being drawn northward ahead of the front, which means muggy and unstable conditions.
The American Lung Association of Hawaii has these tips if you're sensitive to vog, especially if you have a chronic breathing problem like asthma, bronchitis or emphysema:
Stay indoors and use air conditioning, if possible.
Drink plenty of warm fluids.
Have medications close at hand.
Avoid strenuous outdoor activity.
There may be some relief in sight, at least from the vog. The front is forecast to slowly lift to the northeast Tuesday night, which may allow the light winds to shift just enough to nudge the vog south of the smaller islands. But the ridge is forecast to remain close to or over Hawaii, which means continued humid weather and no tradewinds, so the air may remain stagnant. A second approaching cold front may cause another wind shift that would allow vog to become more widespread again by the end of the week.