The Clark County Department of Environment and Sustainability (DES) is issuing an advisory for Tues., Aug. 18 – Wed., Aug. 19 for elevated levels of smoke and ozone due to the regional wildfires in the southwest U.S. DES Division of Air Quality officials say smoke is made of small dust particles and other pollutants that can aggravate respiratory diseases … [Read more...] about Smoke, Ozone Advisory Issued for Tuesday and Wednesday Due to Wildfire Smoke