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Updated May 1, 2013 - 7:42 am

Air-quality control issues ozone alert for metro Phoenix

PHOENIX — Environmental regulators say metropolitan Phoenix is under an
ozone health watch Wednesday as the area’s pollution levels may approach the
federal health standard for air quality.

Ozone is an invisible gas created when other pollutants in the air are heated
by the sun.

Experts say ozone can irritate the lungs and aggravate existing health
conditions such as asthma.

Officials said people who are unusually sensitive to air quality should consider
limiting their time outdoors.

They also recommended that people avoid waiting in their cars at drive-thru
restaurants, unplug electronic devices that aren’t being used and fuel their
cars after dark or during cooler evening hours.

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