EXTREME HEAT Sets SCARY New Record!
Phoenix shattered multiple temperature records this week, with August 7 marking the hottest August day ever recorded in the city at a scorching 118°F.
At a Glance
- Phoenix hit 118°F on August 7, 2025, a new all-time August record
- Daily high also set a new record for August 6 at 115°F
- Overnight low of 94°F on August 7 broke previous warm low record
- Prior daytime record for August 7 was 112°F, last set in 2012
- Heat dome continues to affect the broader U.S. Southwest
Historic Heat in Phoenix
On August 7, Phoenix reached an unprecedented high of 118°F at Sky Harbor Airport, surpassing all previous August temperature records for the city. This extreme reading topped the previous August benchmark of 117°F and broke the daily high record of 112°F, which had stood since 2012 and 1905.
Watch now: Phoenix Breaks All‑Time August Heat Record: 118 Degrees · YouTube
The record-setting trend began a day earlier, on August 6, when the high reached 115°F—breaking that day’s previous record as well. Elevated overnight temperatures compounded the strain, with the low on August 7 never dipping below 94°F. This surpassed the former warmest low of 91°F set in 2023, making it one of the hottest 24-hour periods on record in the city.
Heat Dome and Broader Impact
These extreme conditions are attributed to a persistent heat dome parked over the American Southwest. A heat dome is a high-pressure system that traps warm air underneath, preventing heat from escaping and causing temperatures to spike. This phenomenon has extended across several states, bringing prolonged heat advisories and elevating health risks, especially for vulnerable populations.
Forecasters warn that the pattern may persist through the weekend, with little nighttime relief and further record challenges possible. Local authorities have issued excessive heat warnings, urging residents to stay hydrated, avoid outdoor exposure during peak hours, and make use of cooling centers where available.
Emergency services and health systems are on high alert, with elevated calls for heat-related illnesses already reported. Additionally, elevated fire danger exists due to the combination of dry conditions, low humidity, and persistent heat.
Sources
AZFamily
Washington Post
KTAR News
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