Phoenix is cranking up the heat this week, with clear skies and already-warm readings on Monday, July 6, 2026, setting the stage for a blistering midweek stretch. An Extreme Heat Warning is in effect from 10 a.m. Tuesday, July 7, 2026, through 8 p.m. Thursday, July 9, 2026, and forecasters say daytime highs will soar well above 110°F with only modest overnight relief.
What To Expect
Daytime highs are expected to top 110°F across much of the lower deserts. Forecast highs land near 111°F today, then climb to roughly 113–114°F on Tuesday and Wednesday at the peak, with some neighborhoods flirting with readings close to 116°F. Overnight lows will linger in the upper 80s to around 90°F, which limits nighttime cooling and ramps up the risk of heat-related illness, according to NWS Phoenix.
Where To Cool Off
If you need a break from the blast furnace, Maricopa County’s regional Heat Relief Network lists cooling centers, hydration stations and respite locations across the Valley. You can call 2-1-1 for help finding space and transportation. The interactive Heat Relief map shows nearby cooling options and extended-hours sites during heat events, according to the Maricopa Association of Governments' Heat Relief Network.
Staying Safe
Anyone working or spending time outdoors should take extra precautions. Shift strenuous activity to early morning or evening, drink plenty of water, and take frequent breaks in shaded or air-conditioned areas. Employers and work crews are urged to schedule regular rest breaks and follow heat-safety guidance. Heat stroke is an emergency, so call 911 right away if someone becomes disoriented or loses consciousness, according to NWS Phoenix.
This warning escalates recent coverage of rising triple-digit heat across the Valley and marks the first major heat-alert window for midweek, with little nighttime cooling expected through Thursday. For more on the warm-up and earlier advisories, see the brutal heat watch that set the stage.
