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  • PDEQ issued an Air Pollution Advisory for May 26, 2020

    May 26, 2020 | Read More News
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    Pima County, Ariz. – May 26, 2020 - The Pima County Department of Environmental Quality (PDEQ) issued an Air Pollution Advisory for May 26, 2020, due to the potential for elevated levels of ground-level ozone air pollution in the Tucson metropolitan area.
    People who are sensitive to air pollution may experience shortness of breath, coughing, throat irritation, wheezing, and breathing discomfort. If sensitive to ozone, individuals may want to limit outside exertion in the afternoon when elevated levels of ozone pollution are more likely to occur. Intense outdoor physical activity causes faster and deeper breathing, which allows ozone to penetrate into parts of the lungs more likely to be injured. 

    Those who tend to be more sensitive to ozone include children, adults who are active outdoors, people with respiratory diseases, and certain individuals who have an unusual sensitivity to this particular air pollutant. Individuals who are feeling symptoms should seek medical attention, if necessary.

    A variety of emissions contributes to the creation of ground-level ozone. Motor vehicle exhaust, industrial and power plant emissions, gasoline vapors, paint, gasoline-powered lawn and garden equipment, chemical solvents and natural sources such as wildfires and some vegetation emit oxides of nitrogen and/or volatile organic compounds that form ozone after a photo-chemical reaction occurs with intense sunlight and heat. 

    We can take the following actions to reduce the emissions that contribute to ground level ozone:

    • Reduce driving - combine errands into one trip
    • Avoid idling your vehicle’s engine. Refrain from long drive-thru lines - park and go inside instead
    • Re-fuel your car after 6 p.m. when fumes are less likely to form ozone
    • While re-fueling, always stop at the click to avoid spills and overfilling gas tank
    • Make sure your gas cap is tightly sealed after re-fueling
    • Check your tire pressure monthly to reduce gasoline use and associated air pollution
    • Use low VOC or water-based paints, stains, finishes and paint strippers
    • Avoid using gas-powered lawn and gardening equipment
    • Conserve electricity to reduce emissions from power plants
    PDEQ monitors air pollution in our region at 15 air quality monitoring sites in eastern Pima County. Up-to-the-hour air pollution levels are available in the air monitoring section of the PDEQ website.

    Individuals can sign up to receive Air Quality Advisories and other Pima County Department of Environmental Quality notices. In addition, individuals can sign up to receive Arizona Department of Environmental Quality 5-Day Air Quality Forecasts for Pima County.