The Arizona Department of Environmental Quality (ADEQ) has extended the ozone High Pollution Advisory (HPA) for Maricopa County for the tenth consecutive day through Friday, June 23. This HPA is due to ozone levels expected to accumulate enough to exceed the federal health standard for ozone. The ozone levels are expected to remain in the unhealthful range through the weekend.

People most affected by ozone include children, senior citizens, people who work or exercise outdoors and people with pre-existing respiratory disease. Ozone can irritate the respiratory system, aggravate asthma and reduce the immune system’s ability to fight off respiratory infections. Ozone-related health problems include shortness of breath, coughing, wheezing, headaches, nausea, and throat and lung irritation.

Employers and Travel Reduction Program Transportation Coordinators are advised to activate their HPA Plans immediately. ADEQ further recommends that the general public limit outdoor activity while the HPA is in effect, especially children and adults with respiratory problems.

Maricopa County has implemented its wood burning and dust control regulations for this event.