Sources and further reading (Last reviewed: July 9, 2026): This guide is based on current recommendations from:

• Ready.gov Wildfire Guidelines
• CAL FIRE “Ready, Set, Go!”
• EPA guidance on indoor air quality during wildfires
• Firewise USA program standards

Wildfire Home Preparedness Guide

Wildfire preparedness is fundamentally different from preparing for a hurricane or winter storm. While a hurricane allows days of warning to board windows and stock pantries, a wildfire can force a neighborhood to evacuate in minutes.

The core strategy for wildfire resilience is divided into two distinct parts: Evacuation Readiness (getting your family out safely) and Home Hardening (giving your structure the best chance to survive).

1. Emergency Alerts and Evacuation Planning

Your first line of defense is information. The deadliest wildfire outcomes occur when residents are caught unaware or delay their departure.

Understand Evacuation Levels

Many Western U.S. states use a standard “Ready, Set, Go” system:

• Level 1 (Ready): Be aware of the danger. Monitor emergency services.
• Level 2 (Set): Be prepared to leave at a moment’s notice. This is the time to load your vehicle and move family members with mobility needs.
• Level 3 (Go): Leave immediately. Danger is current or imminent.

Alert Systems

• Wireless Emergency Alerts (WEA): Ensure emergency alerts are enabled on your smartphone.
• County/Local Systems: Sign up for your county’s specific emergency text/call system (e.g., CodeRED, Nixle).
• NOAA Weather Radio: Keep a battery-operated or hand-crank radio tuned to local frequencies for Red Flag Warnings.

2. The Wildfire Go-Bag and Vehicle Readiness

When an evacuation order is given, you will not have time to pack.

The 5-Minute Go-Bag

Pre-stage these items near your primary exit:

• N95 or P100 particulate masks (cloth and surgical masks do not filter wildfire smoke).
• Minimum 3-day supply of prescriptions and necessary medical equipment.
• Important physical documents (deeds, passports, birth certificates) or a digital backup on an encrypted flash drive.
• Evacuation clothing: long pants, long-sleeved shirts, heavy shoes/boots (no sandals), and leather gloves.
• Cash (ATMs may fail during power shutoffs).

Vehicle Readiness

• Maintain at least a half-tank of gas or a 50% charge during peak fire season.
• Park facing outward in your driveway for rapid departure.
• Keep the garage door manual release clear in case of power failure.

Pets and Accessibility

• Keep pet carriers accessible and pre-loaded with leashes, food, and water bowls.
• For household members with mobility needs, plan to leave at Level 2 (Set) rather than waiting for a mandatory order.

3. Defensible Space and Home Hardening

Note: Always consult your local fire agency and local building codes, as defensible space requirements vary heavily by municipality.

Defensible space is the buffer you create between a building and the grass, trees, shrubs, or any wildland area that surround it.

The Three Zones of Defensible Space

1. Zone 0 (0-5 feet from home): The Ember-Resistant Zone. Remove all combustible materials. Use hardscaping like gravel or concrete. Remove debris from gutters and roofs regularly.
2. Zone 1 (5-30 feet): The Lean, Clean, and Green Zone. Keep grass mowed to 4 inches or less. Remove dead plants, grass, and weeds. Ensure tree canopies are spaced apart.
3. Zone 2 (30-100 feet): The Reduced Fuel Zone. Create horizontal and vertical spacing between shrubs and trees to prevent fire from climbing into the canopy.

Home Hardening Basics

• Vents: Cover exterior attic and subfloor vents with 1/8-inch to 1/16-inch metal wire mesh to prevent ember intrusion.
• Roofs: Embers landing on roofs are a primary cause of home ignition. Ensure your roof is Class A fire-rated.
• Windows: Dual-pane windows with one pane of tempered glass reduce the chance of windows breaking from radiant heat.

4. Smoke Readiness and Indoor Air Quality

Even if a fire is hundreds of miles away, smoke can create hazardous breathing conditions.

• HVAC Systems: Upgrade your home’s HVAC filter to MERV 13 or higher if the system can handle it.
• Portable Air Purifiers: Use a HEPA-certified portable air purifier in a designated “clean room” where the family sleeps.
• Avoid Creating Indoor Pollution: Do not burn candles, use gas stoves, or vacuum during heavy smoke days, as these activities suspend more particles in the air.

5. Renters, Apartments, and Urban Households

Wildfires are not strictly a rural problem; the urban-wildland interface is expanding.

• Renters: You cannot rebuild a roof, but you can control your go-bag, your renter’s insurance policy (document all belongings with a video walkthrough), and your indoor air purifier.
• Apartments: Know your building’s evacuation routes. Ensure your landlord has maintained clear pathways and working smoke alarms.

6. Power Shutoffs (PSPS) and Backup Power

In California and other high-risk areas, utilities may proactively shut off power (Public Safety Power Shutoffs) during extreme wind events to prevent transmission lines from sparking fires.

• Backup Power Planning: Have battery banks or a properly sized solar generator for medical devices, phones, and essential lighting. Use the calculator below to size a safe, indoor-friendly battery.
• Generator Safety: Never run a fuel-powered generator indoors, in a garage, or near an open window due to carbon monoxide risk. Ensure generators are placed on non-combustible surfaces, as their exhaust can ignite dry brush.

Related Resources:

• Complete Emergency Kit Guide
• Family Communication Plan
• Solar Generators Guide