NWS Phoenix

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Last Map Update: Sun, May 10, 2026 at 7:44:14 am MST

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Temperature Outlook

Extreme Heat Warnings have been issued for the Phoenix metro, as well as parts of western Imperial County for today before expanding to all of the major population centers on Monday. The warning will continue into Tuesday for the Phoenix Metro area. While overnight lows remain comfortable, afternoon high temperatures will reach 104-112°F, with Monday being the hottest and most impactful day.

Although the morning will be pleasant, temperatures will quickly climb during the mid to late morning hours and then top out in the 102-109° range across the lower deserts during the mid to late afternoon hours. An Extreme Heat Warning goes into effect for the Phoenix Metro at 11am MST. If you have outdoor plans today, make sure to drink plenty of water and electrolytes and try to limit your time outside in the afternoon.

Temperatures will reach their highest levels of 2026 so far on Monday. High temperatures across the lower deserts are forecast to reach 104-112°F on Monday, leading to widespread moderate HeatRisk with scattered areas of major HeatRisk, including in the Phoenix metropolitan area.

High temperatures will reach the 100s across the lower deserts the next several days and will be hottest on Monday, pushing 110°F in some areas. 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 low 100s by the middle of the workweek.