An ozone health watch issued for Thursday was extended one day longer for metropolitan Phoenix.
The watch was issued through Friday because pollution levels could approach the federal health standard for air quality.
Environmental regulators say people who are unusually sensitive to air quality should consider limiting their time outdoors, because ozone can irritate the lungs and aggravate existing health conditions such as asthma.
Authorities recommend that people avoid waiting in their cars at drive-thru restaurants, unplug electronic devices that aren't being used, unplug unused appliances and fuel their cars after dark or during cooler evening hours.
Copyright 2013 Associated Press. All rights reserved. CBS 5 (KPHO Broadcasting Corporation) contributed to this report.
Tuesday, September 2 2014 8:02 PM EDT2014-09-03 00:02:03 GMT
The World Food Program says it provided food to a record 4.1 million people inside Syria last month.More >
Islamic State extremists released a video Tuesday purportedly showing the beheading of a second American journalist, Steven Sotloff, and warning President Barack Obama that as long as U.S. airstrikes against the militant...More >
Tuesday, September 2 2014 4:42 PM EDT2014-09-02 20:42:09 GMT
Canadian police say pop star Justin Bieber has been charged with dangerous driving and assault after a collision between a minivan and an ATV led to a physical altercation in southwestern Ontario.More >
Canadian pop star Justin Bieber faces new charges after he was arrested for dangerous driving and assault following a collision between a minivan and an ATV that led to a physical altercation involving a photographer, his...More >