The Pima County Department of Environmental Quality (PDEQ) is issuing a ground-level Ozone Action Day for the Tucson metropolitan area Friday. Individuals who are especially sensitive to ozone air pollution may experience shortness of breath, coughing, throat irritation, wheezing, and breathing discomfort.
If you are especially sensitive to ozone, you may want to limit your level of exertion outside between noon and 6 p.m. when elevated levels of ozone pollution are more likely to occur. Intense physical outdoor activity causes heavier breathing, which allows ozone to...