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First warning day for excessive heat

PHOENIX (AZ family) — An excessive heat warning begins today for lower elevations of Arizona, including the Valley metro area. The warning started at 10:00 a.m. and will last until 8:00 p.m. on Thursday. Today, tomorrow and Thursday are first alert weather days.

Valley temperatures will rise from the 70s and 80s in the morning to the 30s this afternoon, with sunny skies and light winds. Even warmer temperatures will arrive tomorrow, with an expected record high of 113 degrees. Thursday will be almost as warm, with a forecast high of 112 degrees.

Another high pollution advisory for ozone is in effect today in Maricopa County. Ozone can make breathing difficult, especially for people suffering from asthma or other respiratory diseases.

An area of ​​low pressure is forecast to move through the state Thursday evening and into Friday, causing changing weather patterns. Temperatures in the valley will cool slightly to 108 degrees on Friday. Rain and thunderstorms will be possible in higher elevations on both days. Gusty winds will also increase fire danger across the state.

Temperatures are expected to rise over the weekend as high pressure returns. At this point, temperatures of 111 to 112 degrees will likely be the highest on both Saturday and Sunday, which is Father’s Day.