...AIR QUALITY ADVISORY IN EFFECT UNTIL 11 AM PDT THURSDAY... The Southwest Clean Air Agency has issued an Air Quality Advisory for Clark County. An Air Quality Advisory for smoke and ozone has been issued. Wildfires burning in the region combined with forecasted conditions will cause air quality to reach unhealthy levels at times. The Air Quality Advisory for smoke is in effect until further notice. The Air Quality Advisory for ozone is in effect from noon Tuesday through Thursday. Pollutants in smoke can cause burning eyes, runny nose, aggravate heart and lung diseases, and aggravate other serious health problems. Limit outdoor activities and keep children indoors if it is smoky. Please follow medical advice if you have a heart or lung condition. More information about air quality can be found at: www.swcleanair.gov