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Last Map Update: Tue, Aug 18, 2026 at 12:44:49 pm MST

Watches, Warnings & Advisories

National Weather Service NWS Flagstaff, AZ

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National Weather Service Albuquerque, NM

National Weather Service NWS Tucson Arizona

Extreme Heat Warning

Heat Advisory

Air Quality Alert

Extreme Heat Warning

Weather Outlook

Hot Temperatures All Week

Strong high pressure over the Desert Southwest will lead to abnormally hot temperatures through the week with temperatures up to 5-7°F above average and Major HeatRisk across the lower deserts. An Extreme Heat Warning is in effect through Friday for the lower deserts of AZ and southeast CA along with the San Carlos area in southern Gila County.

Storm chances will be limited to the AZ high terrain and southeast AZ today, however distant outflow boundaries may reach the lower deserts resulting in gusty winds and areas of blowing dust. Storm chances will expand area-wide beginning Wednesday. Temperatures will remain well above normal through the entire week resulting in a Major HeatRisk and an Extreme Heat Warning.

Afternoon highs across the lower deserts will range between 109-113°F throughout the week, several degrees above daily normals for this time of year. Overnight lows in the 80s to as warm as the lower 90s in Central Phoenix will be common, resulting in little relief. Areas of Major HeatRisk will last through the entire work week. Extreme Heat Warnings are in effect through Friday.