Arizona Department of Environmental Quality

 The Arizona Department of Environmental Quality (ADEQ) has issued a PM-10 Health Watch for tomorrow, May 5, for areas in and bordering Maricopa County.

ADEQ issues a watch when the highest concentration of ozone or particulate matter levels may exceed the federal health standard.

People with respiratory or other health problems that make them more sensitive to air pollution are advised to limit their outdoor activity.

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