Elevated levels of ground-level ozone air pollution in the Tucson metro area have caused Pima County officials to issue an air quality advisory that could potentially last all weekend.
If the current weather pattern continues, ozone levels could also be elevated over the weekend, causing people who are sensitive to air pollution to experience shortness of breath, coughing, throat irritation, wheezing and breathing discomfort, according to a news release from the Pima County Department of Environmental Quality.
People who are sensitive to air quality should limit outdoor activities between noon and 6 p.m., when higher levels of pollution are more likely to occur.
Emissions that create ground-level ozone include motor vehicle exhaust, industrial and power plant emissions, gasoline vapors, chemical solvents and wildlfires.
Up-to-the-hour air pollution levels are available on the Pima Department of Environmental Quality website at www.pima.gov/deq.
