Record Heat Sizzling

Phoenix, a city familiar with triple-digit heat, is closing in on a record this summer. Through Aug. 21, there have been 27 days with high temperatures of 110°F or more in 2007. The current record for 110+ days is 28, set in both 2002 and 1979. With 110°F temperatures possible through Friday in Phoenix and still a month to go during which 110°F temperatures are common, there is a high probability that a new record will be set this year.

In the statement regarding the record, the National Weather Service states that the number of 110+ days have been increasing over the years and cites "urbanization and regional/global climate change" as possible causes.