Extreme Heat Watch

Locations Affected

Chandler, AZ ∙ Scottsdale, AZ ∙ Gilbert, AZ ∙ Phoenix, AZ ∙ Glendale, AZ ∙ Mesa, AZ ∙ Tempe, AZ ∙ Peoria, AZ ∙ Surprise, AZ ∙ Yuma, AZ

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1204 AM MST Mon Mar 16 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH SUNDAY EVENING... * WHERE...Portions of south central and southwest Arizona. * WHEN...From Thursday morning through Sunday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Afternoon high temperatures between 103 and 109 degrees. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Extreme Heat Watch means that a period of very hot temperatures, even by local standards, may occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

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