Arizona, USA — Summer is taking no prisoners this week as Arizona faces one of the hottest 3-day stretches of the season so far. Scorching triple-digit temperatures are expected across all major cities, with some regions — including Phoenix, Yuma, and Lake Havasu City — predicted to hit or exceed 115°F.

The National Weather Service has issued a widespread Excessive Heat Warning through Sunday evening for central and southern Arizona, cautioning that the risk of heatstroke, dehydration, and power outages is extremely high.

“This isn’t just typical Arizona heat — this is hazardous heat,” meteorologist Elena Cortez told Daily Global Diary. “Outdoor exposure should be kept to a minimum.”

🔥 Arizona 3-Day Statewide Weather Forecast

☀️ Heat Safety Tips for Arizona Residents:

• Hydrate constantly — at least one glass of water every hour.
• Wear loose, light-colored clothing and use SPF 30+ sunscreen.
• Avoid outdoor activities from 10 AM to 4 PM.
• Keep pets indoors and ensure access to cool, shaded areas.
• Cooling centers are open across Maricopa, Pima, and Mohave counties.

Power companies like APS and SRP are also advising residents to conserve energy, especially during peak afternoon hours, to avoid grid overload.

“Arizona knows heat,” said Tucson local Maria Robles, “but 115°F is when it stops being just hot and starts being dangerous.”

Whether you’re in the Sonoran Desert or near the Grand Canyon, it’s a weekend to stay indoors, stay hydrated, and stay smart.

Oro Valley nestled near Tucson’s foothills, will feel the familiar touch of southern Arizona’s summer warmth this week. Expect highs in the mid-90s, warm pleasant evenings, and a few scattered clouds by midweek to slightly temper the sun’s intensity.

Here’s your detailed look at Oro Valley’s next three days:

What to expect:
Mornings and evenings will be the best times for hikes, errands, or gardening. Keep water bottles handy, wear light, breathable clothing, and take breaks in the shade or air conditioning if you’re outdoors for extended periods.

Safety reminder:
Even moderate high desert heat can lead to heat exhaustion if you’re not careful. Watch for dizziness, headaches, or nausea — rest, hydrate, and cool down immediately if you feel any symptoms. Keep pets hydrated, and be aware of dry conditions that can raise local fire risk.

Maricopa is set for a typical summer scorcher, with triple-digit highs baking the city and warm nights offering only modest relief. A touch of cloud cover midweek may slightly take the edge off the sun’s intensity, but residents should still stay vigilant and practice heat safety.

Here’s how the next three days look for Maricopa:

What to expect:
For comfort and safety, plan outdoor activities early in the morning or after sunset. Stay hydrated, wear lightweight, breathable clothing, and find shade or AC whenever possible.

Safety reminder:
Heat exhaustion can sneak up fast — symptoms include headache, dizziness, and nausea. If you feel unwell, stop what you’re doing, cool down, and drink water immediately. Never leave pets or children in parked cars, and check on elderly neighbors during the hottest parts of the day.