PHOENIX — The National Weather Service has issued an excessive heat warning for Thursday in the Phoenix metropolitan area.
In addition, the Arizona Department of Environmental Quality has issued a high pollution advisory for ozone.
Meteorologists said the Phoenix metro area is expected to see a high Thursday of 109 degrees, which would break the record for the date set in 1962.
Phoenix already has had the hottest meteorological summer on record.
Between June and August, meteorologists said Phoenix had 50 days with a high temperature of at least 110 degrees.
That topped the previous mark of 33 days set in 2011.