An air quality advisory issued in Clark County because of wildfire smoke has been extended through Aug. 13, according to the department of air quality.

Smoke from wildfires in California continues to move into the area. Local weather conditions combined with the smoke may increase ground-level ozone, according to the department. The wildfire smoke may also contribute to elevated levels of particulate matter in the region.

Elevated levels of ozone and particulate matter may impact people with respiratory problems, cardiac disease, young children and senior citizens. Exposure to ozone can induce coughing, wheezing, and shortness of breath.

To limit exposure, the department of air quality recommends staying indoors when you see or smell smoke, keep windows and doors closed, schedule activities in the morning or evening, reduce driving, use mass transit or carpool, and fill up your gas tank after sunset.

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