PHOENIX -- The hottest weather the Valley of the Sun has seen all summer arrived this week.
On Tuesday, Phoenix Sky Harbor reported an afternoon high of 113. Wednesday morning, the low was 94. This was the warmest morning low recorded at Sky Harbor since July 2010.
Wednesday afternoon, the mercury is expected to soar to 114 in Phoenix. This could tie the day’s high temperature record. The rest of the Valley will see afternoon highs ranging from 112 to 117. Another dose of this heat is expected Thursday.
The National Weather Service issued Excessive Heat Warnings for most of Maricopa County, including the Phoenix-metro, northern Pinal Co, the Lower Colorado River Valley, and the Yuma area Wednesday morning through Thursday evening.
A High Pollution Advisory is in effect Wednesday across Maricopa County for unhealthy levels of ozone. Ozone can cause respiratory issues.
A strong ridge of high pressure is to blame for the scorching temperatures.
Monsoon moisture is also working back into Arizona, so storms are expected across the White Mountains and Mogollon Rim Wednesday afternoon. Some of the moisture across eastern Arizona could push a stray storm or shower in the Valley Wednesday evening. Thursday morning’s lows in the Valley should dip only to the 90s again.