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Tradewinds should return tonight, blowing away vog

By Star-Advertiser staff

LAST UPDATED: 4:17 p.m. HST, Jan 3, 2012

Voggy conditions over south Oahu should decrease over the next 24 to 36 hours as winds that brought the vog to Oahu die down, a University of Hawaii professor of meteorology said.

A high pressure cell produced south-easterly winds that carried the plume of vog to Oahu, said Steven Businger, a UH professor and principal investigator of the school's Vog Measurement and Prediction Project, which tracks vog. The project can be viewed online at

According to VMAP, Honolulu's current air quality is "moderate." 

Moderate conditions mean acceptable air quality, but some pollutants may cause moderate health concerns for a very small number of people. Those who are usually sensitive to ozone may experience respiratory symptoms, according to, an air quality website.

As of 2 p.m., Honolulu's air quality was rated at 70 in the moderate range, which spans from 51 to 100, according to Kapolei was rated at 73, Sand Island at 73, and Kihei at 59.

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