Air Quality Advisory Issued for Pima County June 21by Pima County News on Jun. 21, 2011, under Environmental Quality, Health, Pima County, Tucson
Tucson, Ariz. – The Pima County Department of Environmental Quality issued an advisory for ground-level ozone air pollution for the Tucson metropolitan area Tuesday.
Individuals who are especially sensitive to air pollution may experience shortness of breath, coughing, throat irritation, wheezing and breathing discomfort.
It’s possible that ozone levels may be elevated Wednesday, too, if weather conditions are similar.
Anyone especially sensitive to ozone may want to limit his or her level of exertion outdoors between noon and 6 p.m. That is when elevated levels of ozone pollution are more likely to occur.
Intense physical outdoor activity causes faster and deeper breathing. That allows ozone to penetrate into the parts of the lungs that are more likely to be injured.
Those most likely to be sensitive to ozone include children, adults who are active outdoors, people with respiratory diseases, and certain individuals who have an unusual sensitivity to this pollutant.
There are many types of emissions that contribute to the creation of ground-level ozone. Motor vehicle exhaust, industrial and power plant emissions, gasoline vapors, chemical solvents and natural sources emit oxides of nitrogen and volatile organic compounds that form ozone in the presence of intense solar radiation.