The Pima County Department Environmental Quality has issued a warning for an elevated potential for ground-level ozone air pollution in the Tucson metro area for today, May 26.
“People who are sensitive to air pollution may experience shortness of breath, coughing, throat irritation, wheezing, and breathing discomfort,” said a department press release.
Individuals who are sensitive to ozone should limit time outside doing extraneous activities particularly in the afternoon when elevated ozone levels are likely to occur. Exercising outdoors during this time and breathing deeply can cause ozone to penetrate the lungs more rapidly.
Ozone pollution is caused by vehicle exhaust, industrial and power plant emissions, gasoline vapors, paint, gasoline-powered landscaping equipment, and chemical solvents, as well as natural sources like wildfires. The department said some vegetation “emit oxides of nitrogen and/or volatile organic compounds that form ozone after a photochemical reaction occurs with intense sunlight and heat.”
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