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Air Quality Alert issued May 21 at 7:45AM MST by NWS Phoenix AZAQAPSRThe Arizona Department of Environmental Quality (ADEQ) has issued anOzone High Pollution Advisory for the Phoenix Metro Area on Tuesday.This means that forecast weather conditions combined with existingozone levels are expected to result in local maximum 8-hour ozoneconcentrations that pose a health risk. Adverse health effectsincrease as air quality deteriorates.Ozone is an air contaminant which can cause breathing difficultiesfor children, older adults, as well as persons with respiratoryproblems. A decrease in physical activity is recommended.You are urged to car pool, telecommute or use mass transit.The use of gasoline-powered equipment should be reduced or done latein the day.For details on this High Pollution Advisory, visit the ADEQ internetsite at www.azdeq.gov/forecast/phoenix or call 602-771-2300.

National Weather Service