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Study: Metro Phoenix air quality among worst in US

PHOENIX — As one glance towards the sky sometimes makes obvious, the air above the Valley is in terrible shape.

The American Lung Association made it official Wednesday with a State of the Air report that ranked Phoenix-Mesa-Scottsdale among the most polluted cities.

The grouping received an F for smog (ozone) and short-term particle pollution (soot). The area ranked No. 10 in the smog category and No. 12 in one-day particle pollution.
The Valley passed for annual accumulation of particle pollution.

Phoenix ranked 11th and eighth in those categories a year ago.

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