Clark County officials have extended a poor air quality advisory through Wednesday due to smoke and ozone from California wildfires wafting into the Las Vegas area.
The county Department of Air Quality and Environmental Management is advising people with heart and respiratory ailments to stay indoors to avoid breathing fine dust particles and soot.
Officials say the same precautions should be taken by children and the elderly.
The county's air quality forecast is for smoke from the Southern California fires to continue to drift more than 250 miles into Clark County for the next several days.
Officials say ozone and particulate levels were monitored in the moderate range on Monday.
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