Arizona Severe Extreme Heat Warning | Effective 06/23/2026 09:59

Headline: 
Extreme Heat Warning issued June 23 at 9:59AM MST until June 25 at 8:00PM MST by NWS Tucson AZ
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
June 23, 2026 - 9:59am
Expires: 
June 24, 2026 - 5:00am
Description: 
* WHAT...Dangerously hot conditions with afternoon temperatures of 107 to 111 degrees. Localized Major Heat Risk. * WHERE...Southeast Pinal County, Tucson Metro Area, Upper Gila River Valley, and Upper San Pedro River Valley (mainly north of Benson). * WHEN...Until 8 PM MST Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Instruction: 
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. 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.
Area Description: 
Tucson Metro Area including Tucson/Green Valley/Marana/Vail; Southeast Pinal County including Kearny/Mammoth/Oracle; Upper San Pedro River Valley including Sierra Vista/Benson; Upper Gila River and Aravaipa Valleys including Clifton/Safford
Forcast Office: 
NWS Tucson AZ