Arizona Severe Extreme Heat Warning | Effective 07/23/2026 12:13

Headline: 
Extreme Heat Warning issued July 23 at 12:13PM MST until July 25 at 8:00PM MST by NWS Tucson AZ
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
July 23, 2026 - 12:13pm
Expires: 
July 24, 2026 - 5:00am
Description: 
* WHAT...Dangerously hot conditions with temperatures of 100 to 105 expected with Major HeatRisk. * WHERE...Eastern Cochise County below 5000 feet, Upper San Pedro River Valley, and Upper Santa Cruz River Valley/Altar Valley. * WHEN...From 10 AM Friday to 8 PM MST Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Instruction: 
Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. 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: 
Upper Santa Cruz River and Altar Valleys including Nogales; Upper San Pedro River Valley including Sierra Vista/Benson; Eastern Cochise County Below 5000 Feet including Douglas/Willcox
Forcast Office: 
NWS Tucson AZ