What the forecast looks like right now

Following an overnight dust storm, Phoenix has been dealing with hazy, dusty conditions and reduced morning air quality. A strong heat dome combined with light winds and humid surface air has been keeping that dust suspended close to the ground.

Highs are expected to climb through the week, reaching the low 110s by the weekend. An extreme heat warning remains in effect for Phoenix, northwestern Pinal County, and Western Arizona through Sunday. At the same time, storm chances are building: outflow winds from thunderstorms over the High Country and Eastern Arizona have been pushing toward Phoenix in the evenings, and the chance of rain is expected to climb toward 30 percent by Sunday as monsoon activity ramps up.

In short — extreme heat during the day, with a real chance of gusty, storm-driven weather moving in behind it. That’s a tough combination for any roof.

Why this stretch is hard on roofs

Sustained extreme heat

Roof surface temperatures in direct Arizona sun can run far hotter than the air temperature — well over 150 to 170 degrees on a day like this. Sustained stretches in the 108 to 112 degree range accelerate the wear on roofing materials, especially asphalt shingles, which soften and become more vulnerable to scuffing, granule loss, and UV damage the longer they sit under intense heat.

Dust and debris buildup

Dust storms leave behind fine debris that settles into roof valleys, gutters, and around vents. That buildup can trap moisture once rain arrives and, over time, contribute to drainage issues in exactly the spots where water needs to move off the roof quickly.

The heat-to-storm transition

The bigger concern is what happens when a roof that has spent days baking in extreme heat suddenly gets hit with monsoon-driven wind gusts and heavy rain. Materials that have been drying out and stiffening in the heat are more prone to cracking, lifting, or shifting under sudden wind loads. This is the exact pattern behind a lot of monsoon-season roof damage in the Valley — not the storm alone, but the storm arriving right after a heat stretch that already left the roof compromised.

What homeowners should check before the weekend

• Look for any shingles that already appear curled, cracked, or lifted — these are the most likely spots for wind damage once storms move through.
• Clear visible debris from gutters and roof valleys if it’s safe to do so, so water has a clear path off the roof.
• Check attic ventilation. Poor ventilation makes heat damage worse and can shorten the life of roofing materials significantly during extended heat events.
• Note any tile that looks cracked or slipped. A tile that has shifted out of place is a common entry point for water once wind-driven rain arrives.
• If you noticed any leaks or damage after last monsoon season and never got it addressed, this is the week it’s likely to resurface.

Staying safe in the heat itself

Local fire departments and the Arizona Department of Health Services have been reinforcing basic heat-safety guidance during this stretch: stay in air-conditioned spaces when possible, limit outdoor activity during the hottest part of the day, drink water before and during any time spent outside, and check on neighbors or family members who may be more vulnerable to the heat. Anyone doing outdoor work — including roof inspections — should avoid the midday hours and never work on a roof alone in this kind of heat.

The takeaway

Extreme heat and monsoon storms don’t hit roofs as two separate events — they hit as one connected event, with the heat setting up the damage that the storm then exposes. If your roof has any existing weak points, a stretch like this weekend’s forecast is when they tend to show themselves. A quick check now is a lot less costly than an emergency repair after a storm.