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Air Quality Alert issued July 14 at 9:00AM MST by NWS Phoenix

Maricopa

...HIGH POLLUTION ADVISORY FOR MARICOPA COUNTY INCLUDING THE GREATER
PHOENIX AREA WEDNESDAY...
The Arizona Department of Environmental Quality in Phoenix has issued
an Ozone High Pollution Advisory for the Greater Phoenix Area for
Wednesday.
This means that forecast weather conditions combined with existing
ozone levels are expected to result in local maximum 8-hour ozone
concentrations that pose a health risk. Adverse health effects
increase as air quality deteriorates.
Ozone is an air contaminant which can cause breathing difficulties
for children as well as persons with respiratory problems. A decrease
in physical activity is recommended.
If it is a regularly scheduled work day, you are urged to car pool,
telecommute or use mass transit.
The use of gasoline-powered equipment should be reduced or done late
in the day.
For details on this High Pollution Advisory for Maricopa County,
visit the ADEQ internet site at www.azdeq.gov or call 602-771-2300.