Phoenix is staring down another brutal stretch of desert heat, with an Extreme Heat Warning in effect as the Valley climbs toward dangerously hot temperatures. Highs are expected to hit near 111°F on Wednesday, June 24, 2026, and again on Thursday, June 25, 2026, while overnight lows linger in the 80s and offer almost no break from the heat. Mostly sunny skies will dominate midweek, and that combination of scorching afternoons and warm nights raises the risk of heat-related illness for outdoor workers, older adults, and anyone without reliable air conditioning. Residents are urged to keep strenuous activity to the early morning or later evening and stay out of the midday blast furnace as much as possible.
What To Expect
Forecasters are calling for mostly sunny conditions through midweek, with afternoon highs near 111°F and only light afternoon breezes, plus overnight lows stuck in the mid-to-upper 80s across much of the metro. The National Weather Service also flags increasing winds and a separate Fire Weather Watch later in the week for some areas, so warm, dry conditions will hang on before a gradual cool-down arrives later in the weekend, according to NWS Phoenix.
Where To Cool Off
To help people get out of the heat, Maricopa County and partner agencies run a Heat Relief Network with dozens of cooling centers, respite sites, and hydration stations scattered across the Valley. Anyone who needs help finding a nearby spot can call 2-1-1 for guidance. The City of Phoenix is also operating extended-hour and dedicated heat-respite sites this summer, including a 24/7 respite center downtown at 20 W. Jackson St. that offers overnight relief and services. For local listings and hours, residents are encouraged to check the county Heat Relief Network, according to Maricopa County.
Afternoon Winds And Fire Risk
Later this week, drier air will drive afternoon humidity into the single digits in some spots and kick up gusty southwesterly winds across parts of the region. Forecast guidance and local forecasters say gusts could reach the 20 to 30 mph range on Friday and Saturday, with locally higher gusts possible, which would create elevated to critical fire-weather conditions where fuels are dry. In that setup, even small ignitions can spread more quickly, so residents are urged to skip backyard burning and hold off on any windy-day debris work that could spark a fire.
How To Stay Safe
Health officials advise shifting heavy outdoor work to the early morning or evening, drinking plenty of water, and using air conditioning whenever possible, since fans alone are not enough once temperatures climb past the mid-90s. People should never leave children or pets in a parked car, even for a short time, and are encouraged to check in on elderly or medically vulnerable neighbors. Call 9-1-1 immediately if someone shows signs of heat stroke, such as a very high body temperature, confusion, or loss of consciousness. For help finding a cooling center or other heat-relief services, residents can call 2-1-1 or use the Heat Relief Network map referenced above.
