PHOENIX (AP) -- Environmental regulators recommend that people living in metro Phoenix who are unusually sensitive to air quality should limit their time outdoors on Friday.
The regulators issued an ozone high pollution advisory for metro Phoenix on Friday because pollution levels may exceed federal air-quality standards.
The HPA is being issued because sunshine, light winds and temperatures of 116 to 118 degrees create ideal ground-ozone creation conditions. Winds are expected to shift to from the south and southeast because of high pressure in the Four Corners area and smoke moving eastward from a large fire in southern New Mexico could cause more ozone formation in the Valley.
"ADEQ meteorologists are forecasting an increased production in ozone due to the upcoming high heat and large amounts of sunshine," said ADEQ Air Quality Division Director Eric Massey in a news release. "Since conditions are ideal for ozone production, we're recommending that people take extra precautions to protect their health."
Ozone can irritate the lungs and aggravate existing health conditions such as asthma.
Authorities recommended 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.