Climate risk in Phoenix, Arizona.
Extreme heat, drought, and water supply questions.
Phoenix's dominant peril is heat — the metro has seen a fast increase in days above 110°F and nights above 90°F. Water availability (Colorado River / CAP allocations) is the long-run structural question. Flood and wildfire exist but are localized.
Peril breakdown
Localized flash flooding along washes and monsoon runoff. Not metro-wide.
Wildland-urban interface exposure in North Phoenix, Scottsdale foothills, and outer edges.
Not a hurricane market. Localized microburst wind.
Days above 110°F and nights above 90°F have both risen materially. Grid stress in July-August is a real risk.
Colorado River shortage declarations affect long-run supply. Aquifer decline in some outer zones.
Insurability
Standard market is stable. Wildfire-exposed edges are seeing tighter underwriting. Heat itself is not directly priced by insurers but shows up in cooling costs and grid outages.
20-year outlook
Heat exposure is projected to keep rising. Water becomes the binding constraint on outer-suburb growth. Grid reliability is the secondary infrastructure question.
If you're buying in Phoenix
Prioritize insulation, cool-roof or radiant barrier, and backup power sized for medical needs. On the wildland edges, apply the wildfire hardening checklist.
Related reading: buying in a climate-safe area, questions to ask before buying, home insurance and climate change.
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