wweather1
wweather1 wweather1
HomeWeather news → Extreme Heat Warning Issued for Phoenix Metropolitan Area
🔥 Heat United States

Extreme Heat Warning Issued for Phoenix Metropolitan Area

September 7, 2026 · wweather1 editorial · 2 min read

The National Weather Service in Phoenix has issued an Extreme Heat Warning for the Phoenix metropolitan area from Tuesday morning through Thursday evening. Afternoon temperatures are expected to reach between 105 and 109 degrees, creating a major heat risk.

The National Weather Service (NWS) Phoenix AZ issued the Extreme Heat Warning on September 7 at 8:39 AM PDT. The alert becomes effective at 10:00 AM MST on Tuesday, September 8, and remains in place until 8:00 PM MST on Thursday, September 10.

Coverage spans the Phoenix metropolitan area, including Northwest Valley, Buckeye/Avondale, Cave Creek/New River, Deer Valley, Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise Valley, East Valley, Fountain Hills/East Mesa, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek. Dangerously hot conditions are expected, with high temperatures reaching 105 to 109 degrees.

Health officials note that heat-related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion, which can develop into heat stroke if left untreated. Anyone overcome by heat should be moved to a cool, shaded location immediately.

Residents in Maricopa County can call 2-1-1 or visit https://www.maricopa.gov/heat to locate free cooling centers, water, and transportation assistance. Public cooling shelters are available in select areas to help mitigate the impacts of the heat.

Why it is dangerous and what to do

⚠️ Safety
• Drink plenty of water and wear lightweight, loose-fitting clothing.
• Reschedule strenuous outdoor activities to early morning or evening hours.
• Schedule frequent rest breaks in shaded or air-conditioned environments if working outdoors.
• Know the signs and symptoms of heat exhaustion and heat stroke, and call 911 for emergencies.
📊 The numbers, from wweather1 data
Phoenix: now +39°, Clear.
That is 5° above the September climate norm.
The record for this date is +44° (1979).
Three-day forecast: 7 September: +42°/+30° · 8 September: +43°/+28° · 9 September: +41°/+32°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

🌍 Weather in nearby cities

📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

Other weather news