National Weather Service Extends Extreme Heat Warning for Pima County Through Saturday
The National Weather Service in Tucson warns of dangerously hot temperatures across Pima, Cochise, and Santa Cruz counties through Saturday evening.
2 reports on this incident · first at Aug 15, 2026, 3:26 p.m. ET
Earlier reports
Aug 15, 2026, 3:26 p.m. ETFirst report
National Weather Service Issues Extreme Heat Warning for Southern Arizona
The National Weather Service Tucson AZ has issued an Extreme Heat Warning for six zones in Arizona as a developing heat situation affects the region. The warning began at 10:00 AM on Monday, August 17, 2026, and is scheduled to expire at 8:00 PM MST on Friday, August 21, 2026. The affected areas include South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and Western Pima County.
According to the National Weather Service Tucson AZ, dangerously hot conditions are expected, with high temperatures ranging between 103 to 110 degrees and low temperatures ranging between 79 to 85 degrees. Major HeatRisk is expected. The warning covers several locations, including Safford, Organ Pipe Cactus N.M., Mammoth, Vail, Clifton, Ajo, Oracle, Sells, Marana, Tucson, Picacho Peak State Park, and Green Valley.
The agency noted that heat related illnesses increase significantly during extreme heat events. The Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments to reduce risk during outdoor work. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency, and people should call 9 1 1. Additional precautions include taking extra steps when working or spending time outside, rescheduling strenuous activities to early morning or evening when possible, knowing the signs and symptoms of heat exhaustion and heat stroke, wearing lightweight and loose fitting clothing, and drinking plenty of water.
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Revision history
- Version 121 Aug 2026, 14:46current
First published.
- Version 115 Aug 2026, 19:26current
First published.
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