County Data
Maricopa County, Arizona
Self-reliance and preparedness data for Maricopa County
Relatively High
Hazard Risk (25.4/100)
10a
USDA Zone
Excellent
Solar (5.8 kWh/m²/day)
Natural Hazard Risks in Maricopa County
| Hazard | Risk Rating | Score |
|---|---|---|
| Wildfire | Relatively High | 41.9 |
| Hail | Relatively High | 35.8 |
| Strong Wind | Relatively High | 35.4 |
| Heat Wave | Relatively High | 34.7 |
| Lightning | Relatively High | 33.4 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Wildfire Risk in Maricopa County
FEMA National Risk Index41.9/100 — Meaningful, seasonal. Ranked 29 of 562 US counties where wildfire is a leading hazard.
What that means for Maricopa County households
- ●Clear leaf litter from gutters and roof valleys before dry season
- ●Know your evacuation route and where local shelters open
- ●Stock N95 masks — smoke from distant fires is the more likely exposure
- ●Keep a two-week supply buffer for the periods when roads close
Climate Profile
Temperature & Growing Season
| January Avg | 54°F |
| July Avg | 95°F |
| USDA Zone | 10a |
Water & Energy
| Annual Precipitation | 14.2″ |
| Solar Potential | 5.8 kWh/m²/day |
| Wind Speed | 2.0 m/s |
| Soil Type | Sandy Loam |
Local Species
41
Edible species
18
Medicinal species
52
Autonomy Score
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Frequently Asked Questions
- What are the biggest natural hazards in Maricopa County, Arizona?
- Maricopa County has an overall hazard rating of Relatively High based on FEMA National Risk Index data. The top threats are Wildfire, Hail, Strong Wind. Each hazard is scored 0–100 by likelihood and expected impact.
- Is Maricopa County good for solar power?
- Maricopa County has a excellent solar rating. Solar potential is based on average daily irradiance (kWh/m²/day), which determines how much energy rooftop or ground-mounted panels can produce year-round.
- How many edible plants grow in Maricopa County?
- Our database identifies 41 edible plant species in Maricopa County based on regional flora data, USDA hardiness zone, and iNaturalist observations. The full field guide includes identification notes, preparation methods, and seasonal availability.
- What is the autonomy score for Maricopa County?
- Maricopa County has an autonomy score of 52. This composite score measures local self-reliance potential across water access, food production capacity, energy resources, and supply chain resilience. Higher scores indicate greater potential for self-sufficiency.
Other Counties in Arizona
Pima
Zone 9b • 303 frost-free days
Pinal
Zone 10a
Yavapai
Zone 9a • 255 frost-free days
Mohave
Zone 9b • 285 frost-free days
Yuma
Zone 10b
Coconino
Zone 7b • 189 frost-free days
Cochise
Zone 9a • 268 frost-free days
Navajo
Zone 7b • 197 frost-free days
Apache
Zone 7a • 192 frost-free days
Gila
Zone 8b • 228 frost-free days
Santa Cruz
Zone 9a • 263 frost-free days
Graham
Zone 7a • 179 frost-free days