Phoenix, Arizona — On August 7, 2025, the city of Phoenix endured a blistering 118°F (47.8°C), breaking its own record for the hottest August day in over 120 years. The previous August high of 117°F, set in 2023, has now been dethroned by this intense heatwave.
Meteorologists attribute the extreme temperatures to a persistent high-pressure system parked over central Arizona. This weather pattern acted like a heat dome, trapping hot air over the region and suppressing monsoon storms that could have offered some relief.
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| Phoenix Breaks 120-Year Heat Record |
A City Built to Survive Heat
Phoenix is no stranger to sizzling summers — it’s built in the heart of the Sonoran Desert, where triple-digit temperatures are common. However, 2025’s heat has been relentless, with minimal overnight cooling. According to climate historians, the last time Phoenix experienced a comparable August heatwave was more than a century ago, before the city even had widespread air conditioning.
Local hospitals reported a surge in heat-related illnesses, while power grids strained under increased demand for air conditioning. Officials urged residents to stay indoors during peak heat hours, hydrate regularly, and check on vulnerable neighbors.
Why This Heatwave Is Different
- No Monsoon Break – The high-pressure dome blocked moisture and storm development.
- Urban Heat Island Effect – Phoenix’s expanding infrastructure absorbs and retains heat, amplifying nighttime temperatures.
- Global Climate Trends – Scientists warn that record-breaking heat events are becoming more frequent due to global warming.
Authorities Respond
The National Weather Service issued an Excessive Heat Warning for the Phoenix metro area, affecting millions of residents. Cooling centers stayed open late, and public transit offered free rides to help people reach them.
Governor Katie Hobbs released a statement:
“Our state is facing one of the most extreme heat events in history. This is a reminder that preparedness and community care are crucial in keeping Arizonans safe.”
FAQ's
Q1: How does 118°F feel in real life?
Imagine opening your oven at full blast and standing in front of it — all day. Even short walks outside can feel suffocating.
Q2: Can cars overheat in this kind of weather?
Yes. Engines, batteries, and tires face extra stress. Always check coolant levels and tire pressure before driving in extreme heat.
Q3: What’s the safest time to go outside?
Early morning (before 8 a.m.) or after sunset. Even then, nighttime temps in Phoenix can stay above 90°F during heatwaves.
Q4: Is this linked to climate change?
While one event can’t prove climate change, scientists agree that global warming increases the frequency and intensity of extreme heat events like this.
Q5: How can residents stay safe?
Stay hydrated, wear loose light-colored clothing, use sunscreen, avoid outdoor activity during midday, and check on elderly or isolated neighbors.
