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  • PDEQ Continues Air Quality Advisory - May 2

    May 01, 2014 | Read More News
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    The Pima County Department of Environmental Quality (PDEQ) is updating the air quality advisory status for eastern Pima County.  Particulate levels have dropped considerably from levels monitored during the last two very windy days, however, they are still higher than normal levels. Therefore, an advisory is in effect for highly sensitive individuals. “Since the particles we monitor are so small – 10 microns or less – they are very light and it will take a little time for them to settle out of the air,” said Beth Gorman, PDEQ Senior Program Manager. “But it is reassuring to be able to see the mountains again,” she continued.

    Particulate levels are in the mid-range of the moderate scale on the Air Quality Index (mid-70).  On normal days, particulate levels are under 30 on the AQI.

    Individuals with heart disease and respiratory sensitivities may still want to reduce their level of exertion to decrease the amount of particulates they breathe into their lungs. Those most at risk may feel better if they avoid outside exercise today to help reduce exposure to particulate matter.

    Particulate matter is made up of tiny specks of soot, dust, and aerosols that are suspended in the air we breathe. Particulate matter can come from either combustion (cars, industry, fires) or dust from disturbed land that becomes airborne with high winds.

    PDEQ monitors air pollution in our region at 17 air quality monitoring sites. Up-to-the-hour air pollution levels are available online at the PDEQ website www.airinfonow.org or by calling the PDEQ hotline at (520) 882-4AIR.

    The public can sign up at  Air Quality Advisories to receive advisories and other Pima County Department of Environmental Quality notices directly via email.