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NWS Tucson AZXH.W 0006August 29, 2026

Extreme Heat Warning: Upper Santa Cruz River and Altar Valleys including Nogales, Upper San Pedro River Valley including Sierra Vista/Benson and Eastern Cochise County Below 5000 Feet including Dougla

The National Weather Service office in Tucson issued an extreme heat warning for Upper Santa Cruz River and Altar Valleys including Nogales, Upper San Pedro River Valley including Sierra Vista/Benson and Eastern Cochise County Below 5000 Feet including Douglas/Willcox in Arizona, which was in force until 8:00 p.m. local time on August 29. It was the 6th extreme heat warning the NWS office in Tucson issued in 2026. Arizona had 7 extreme heat warnings in August 2026, against 6 in an average August of 2008-2025 (Arizona's extreme heat warnings by year).

ExpiredWarning

Issued5:25 a.m. PDT, August 29, 2026
In force5:25 a.m. PDT, August 29, 2026
Expired8:00 p.m. PDT, August 29, 2026

In force for 14.6 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Tucson AZ
Area
Upper Santa Cruz River and Altar Valleys including Nogales, Upper San Pedro River Valley including Sierra Vista/Benson and Eastern Cochise County Below 5000 Feet including Douglas/Willcox
State
Arizona
Level
Warning
Issued
5:25 a.m. PDT, August 29, 2026
Expires
8:00 p.m. PDT, August 29, 2026
CAP severity, certainty, urgency
Severe, Likely, Expected
VTEC event
KTWC XH.W 0006
Official source
National Weather Service: the notice at its source

Extreme Heat Warnings in Arizona since 2008Every warning type in Arizona

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

* WHAT...Dangerously hot conditions with temperatures 98 to 105 degrees. Overnight lows 71 to 78 degrees. Major HeatRisk is expected today through Saturday with isolated Extreme HeatRisk. * WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and Western Pima County. * WHEN...Until 8 PM MST this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

What the agency told people to do

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.

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.

The record around this notice