The Arizona Department of Environmental Quality issued its third ozone high-pollution advisory of the year while another excessive heat warning was in effect for Wednesday.
Officials said they expect a shift of wind from the east and northeast that may trap ozone concentrations in the central and western part of the Phoenix metropolitan area as temperatures again approach 110 degrees.
The months of April through September make up the Valley's longer-than-normal "ozone season."
Details from ADEQ:
A health watch means the highest concentration of pollution may approach the federal health standard. Unusually sensitive people should consider reducing prolonged or heavy outdoor exertion.
A high pollution advisory means the highest concentration of pollution may exceed the federal health standard. Active children, adults and people with lung disease such as asthma should reduce prolonged or heavy outdoor exertion.
During the health watch, the following actions are recommended.
Avoid waiting in long drive-thru lines; for example, at coffee shops, fast-food restaurants or banks. Park your car and go inside.
Unplug unused appliances.
Fuel your vehicle after dark or during cooler evening hours.
Connect your outdoor lights to a timer or use solar lighting.
The Maricopa County Air Quality Department will be enforcing its mandatory "No Burn Day" restrictions on Wednesday.
Copyright 2013 CBS 5 (KPHO Broadcasting Corporation). All rights reserved. The Associated Press contributed to this report.
Sunday, August 31 2014 3:28 PM EDT2014-08-31 19:28:29 GMT
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