The first high ozone pollution advisory of the year has been issued for Friday, the Arizona Department of Environmental Quality said.
Bright sunshine and readings higher than 100 degrees are expected to produce conditions suitable for ground-level ozone, ADEQ said. Additional ozone is expected to move in from Southern California.
Highest concentrations of ozone are expected to occur in the East Valley.
"We hope that Valley commuters and all residents will take action this summer to help reduce ozone by trying transit, seeking out a vanpool or finding a carpool partner," said Steve Banta, Valley Metro CEO.
The Maricopa County Air Quality Department said it plans to enforce its mandatory "No Burn Day" restrictions on Friday. The restriction includes people and businesses that have burn permits for open burning.
Children and adults with respiratory problems are urged to avoid outdoor activities.
Valley Metro requests employers activate their high pollution advisory Plan. Residents and employers are asked to use these tips to help make the air healthier to breathe:
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