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ADEQ is issuing a High Pollution Advisory (HPA) for Saturday, Dec. 31, 2016, and Sunday, Jan. 1, 2017, for fine particulate matter (PM2.5 ) for Maricopa County & Nogales, Arizona. This HPA is due to particle pollutant levels expected to accumulate enough to exceed the federal health standard for PM2.5.
Maricopa County HPA | Learn More >
Nogales HPA | Learn More >