Highlights
- An extreme heat warning covers Phoenix and Southern Arizona through Saturday evening, Aug. 29.
- Temperatures are forecast to peak at 113 to 115 degrees Tuesday through Friday, per FOX 10 Phoenix.
- The NWS Phoenix office extended the warning after heat risk reached major-to-extreme levels across the lower deserts.
- Arizona veterinarians are also reporting rare heat injuries in dogs as the event continues.
An extreme heat warning remains in effect for Phoenix and Southern Arizona through Saturday evening, Aug. 29, according to FOX 10 Phoenix.
Temperatures are forecast to peak between 113 and 115 degrees Tuesday through Friday, with overnight lows staying elevated over the next several weeks, FOX 10's weather team reported. The National Weather Service Phoenix office extended the warning after projecting major-to-extreme HeatRisk across much of the lower desert region, noting the extension now runs through Aug. 29 for much of the area.
The sustained heat has prompted warnings beyond the standard public-safety advisories. An Arizona veterinarian flagged rare heat injuries in dogs this week, according to azfamily.com.
The warning is also confirmed by KOLD News 13 and Weather Underground's Phoenix severe weather tracker. The NWS Excessive Heat Warning for the Phoenix area covers zone AZZ543, per the official NWS alert page.
The warning expires Saturday evening.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- Fox 10 Phoenix retrieved 24/08/2026 15:09
- Fox 10 Phoenix retrieved 24/08/2026 15:09
- weather.gov retrieved 24/08/2026 15:09
- AZ Family (3TV/CBS5) retrieved 24/08/2026 15:09
- kold.com retrieved 24/08/2026 15:09
Authored by The Scottsdale Signal. Drafted by AI from primary-source material under our beat-specific editorial guides; reviewed by humans before publish under our five-gate process. Sources retrieved at 24/08/2026 15:09. Every claim traces to a source.
