Extreme Heat Warnings are in effect for the Phoenix metro, Lower Colorado River Valley, and Western Imperial County today. The warning will continue through Tuesday for the Phoenix Metro area. While overnight lows remain comfortable, afternoon high temperatures will reach 104-112°F, with Today being the hottest and most impactful day.
Temperatures will reach their highest levels of 2026 so far on Today. High temperatures across the lower deserts are forecast to reach 104-112°F leading to widespread moderate HeatRisk with scattered areas of major HeatRisk, including in the Phoenix metropolitan area.
Temperatures will be hottest to start the week with high temperatures reaching the 104-112°F range across the lower deserts today and tomorrow. Temperatures of this magnitude will lead to widespread Moderate HeatRisk each day, with areas of Major HeatRisk on Monday, including in Phoenix. Temperatures will slowly decrease back to the upper 90s to lower 100s by the middle of the workweek.
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