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Wildfire Emergency Kit: 9 Items Your Go-Bag Is Missing
A Red Flag Warning gives you hours, not days. Here is what to stage by the door, and what to grab first if you only get 5 minutes.

Key points
A wildfire emergency kit needs a NIOSH Approved N95 or P100. NIOSH says cloth masks, surgical masks, and bandanas will not filter smoke particles.
An N95 filters PM2.5. It does not filter the gases and vapors in smoke, and it does not supply oxygen.
A Red Flag Warning means fire weather now or within 24 hours: winds of 15 mph or more, humidity at or below 25 percent, above 75 degrees F.
Wear 100 percent cotton, long sleeves, long pants, sturdy shoes. Synthetics melt. CAL FIRE says keep shoes by the bed.
For smoke you cannot outrun, EPA measured a box fan with one 4 inch MERV 13 filter and a cardboard shroud at a clean air delivery rate of about 248.
The bag in your hall closet is probably built for the wrong disaster. Most go-bags assume you are leaving because the power failed or the road flooded. Fire is different. You may be moving at night, through air thick enough to taste, with embers riding the wind ahead of the flame front. What hurts most people first is smoke, not fire.
A wildfire emergency kit is a normal go-bag plus 9 items that general checklists skip. Here is each one, what the research says, and the honest answer to the question nobody asks until the sky turns orange: what do you grab if you get 5 minutes?
What makes a wildfire emergency kit different from a regular go-bag?
A wildfire emergency kit has to do two jobs, and most checklists cover only one. The first is leaving. The second is staying put in bad air, which happens far more often. A fire 200 miles away can make your house miserable for a week with no evacuation order at all.
Your standard kit already solves water, food, light, first aid, and paperwork. If you have not built that layer, start with our 72 hour bug out bag checklist for families, kids, pets, and elderly household members, then add the fire layer: respiratory protection, eye protection, clothing that will not melt, hand protection, and clean air in one room.
This is about the kit, not the property. The California Office of the State Fire Marshal calls defensible space and home hardening "crucial for homes to withstand wildfires," and we covered that work in our guide to wildfire preparedness and defensible space. The kit is the part you can finish this weekend.
What does a Red Flag Warning actually mean?
It means dangerous fire weather is already happening, or a National Weather Service forecaster is highly confident it will within 24 hours. It is not a prediction that a fire will start. It is a statement that if one starts, it will move.
The NWS glossary gives the criteria. They generally apply after a dry spell of roughly one to two weeks, when the National Fire Danger Rating System is high to extreme, and when the forecast calls for sustained winds of 15 mph or more, relative humidity at or below 25 percent, and temperatures above 75 degrees F. A Fire Weather Watch may come first, as a heads-up.
The practical translation: a Fire Weather Watch is your cue to stage the kit by the door. A Red Flag Warning is your cue to put shoes, keys, and pet carriers where you can reach them in the dark. Neither is an evacuation order. Do not wait for one to start packing.
Why does wildfire smoke need an N95 or P100, not a cloth mask?
Because the particles are too small for anything that does not seal. NIOSH calls wildfire smoke "a mixture of gases, vapors, and particles," and defines PM2.5 as particulate matter less than 2.5 micrometers in diameter. EPA calls fine particle pollution "the principal public health threat" from smoke: smaller than the width of a human hair, able to travel deep into the lungs and even enter the bloodstream.
NIOSH is blunt about the alternatives: cloth masks, surgical masks, and bandanas are "not designed to seal to your face and do not have the type of filter media that will filter out the smoke particles." A bandana over your face is theater.
Now the limit most guides leave out. NIOSH says of disposable respirators: "They do not protect against gases or vapors, and they do not provide oxygen." Smoke carries carbon monoxide and other hazardous air pollutants, and an N95 does nothing about them. A respirator buys you a trip to the car, not a day in heavy smoke.
Buy NIOSH Approved. NIOSH says the words "NIOSH" and either "N95" or "P100" should be printed on the filter material itself. Fit matters more than brand: one strap at the base of the neck, one at the crown, then press the nose bar with both hands. Facial hair breaks the seal, so a beard means it leaks no matter what you paid. Children under 2 should not wear one.

The fire layer: respirator, sealed goggles, leather gloves, cotton, headlamp, documents.
What 9 items belong in a wildfire emergency kit that a go-bag misses?
Add these to what you already have.
NIOSH Approved N95 or P100 respirators. Several per person, in the model and size that fits each face. Replace one when it is hard to breathe through, dirty inside, or damaged.
Sealed goggles. NIOSH notes smoke irritates the eyes, and a respirator does nothing for that. Open-sided safety glasses do not cut it in blowing ash. Get the sealed kind sold for sanding.
Cotton or wool, long sleeves and long pants. CAL FIRE's evacuation guidance says to "wear clothes that cover your skin (100% cotton is best)," plus sturdy shoes. Synthetic athletic fabric melts against skin under radiant heat. Pack the work shirt, not the running jacket.
Leather work gloves. For hot handles, hot latches, and moving anything that sat near embers. Nitrile and knit gloves do neither job.
A headlamp. Wind-driven fires move at night, smoke kills visibility, and both hands will be full. A flashlight is the wrong tool when you are carrying a cat.
A portable air cleaner, or the parts for a DIY one. The shelter-in-place half of the kit. Next section covers it.
Hard copies of documents, plus video of the house. Walk every room with your phone, record the walls and closets, and back it up off-site. Claims get settled on evidence, and 10 minutes of video beats your memory. Our emergency document checklist covers what to copy.
Pet carriers staged, not stored. A carrier in the attic is not in your kit. CAL FIRE recommends a carrier per pet, 2 weeks of food and water, non-spill bowls, medications with dosing instructions, leashes, and current photos plus proof of ownership in case you get separated at a shelter.
A car kept above half a tank. Stations lose power and lines form during evacuations. No federal agency publishes this as a rule, and we will not pretend one does. It is a habit that costs nothing.
The tenth thing is not an item. It is where the kit lives. A kit behind the Christmas decorations is a kit you will not get. Ours sits in the coat closet from September to the first real rain, with shoes by the bed, which CAL FIRE recommends in case you leave at night.
What AQI should make you act on wildfire smoke?
Start paying attention at 101, the point where the Air Quality Index crosses the national air quality standard. AirNow publishes the scale: 0 to 50 Good, 51 to 100 Moderate, 101 to 150 Unhealthy for Sensitive Groups, 151 to 200 Unhealthy, 201 to 300 Very Unhealthy, 301 to 500 Hazardous. For PM2.5 the AQI runs on a 24 hour average, which is why a reading can look calm while the air outside your window is clearly getting worse.
The clearest action threshold comes from NIOSH: stay indoors when air quality is unhealthy, and go outside only when it is Good or Moderate. Treat 101 as the line where outdoor plans get cancelled.
An honest limit. No federal agency publishes an AQI at which you must leave home, because the risk depends on who you are. CDC lists children, people with asthma, COPD, heart disease, diabetes, or chronic kidney disease, and pregnant people as higher risk. If that is your household and the forecast says a week of heavy smoke, driving to clean air is reasonable long before any number says so.
How do you set up a clean room for wildfire smoke?
Pick one room, seal it, and clean the air in it. EPA recommends a comfortable room that fits everyone, ideally with an attached bathroom. Close windows, doors, and blinds. No cooking, candles, or smoking. Set the air conditioner to recirculate, because a hot sealed room drives you back outside.
For the HVAC system, EPA says use a MERV 13 filter or the highest rating your fan and filter slot can handle, set the system fan to "On" instead of "Auto," and make sure it fits snugly with no air leaking around the edges. Keep spares: smoky weeks eat filters faster than the manufacturer's schedule assumes.
EPA is clear that commercial air cleaners with a known clean air delivery rate are typically preferred over homemade ones, and that whatever you run must not produce ozone. Still, EPA tested DIY box fan cleaners and published the numbers. All use a 20 inch box fan and MERV 13 filters:
One 1 inch filter: CADR about 111.
The same, plus a cardboard shroud: about 156. The shroud is free and adds roughly 40 percent.
One 4 inch filter with a shroud: about 248.
Two 1 inch filters with a shroud: about 263.
A Corsi-Rosenthal box, 4 filters plus a shroud: about 401.
Two cautions from EPA. Use only box fans built in 2012 or later carrying a UL or ETL mark, because older fans were never tested. And watch the filter: EPA found dirty filters made these cleaners almost completely ineffective. Replace one when it looks dark brown or gray, or smells like smoke. A clogged filter is not a weak air cleaner. It is a fan.

A box fan and a MERV 13 filter. EPA measured this design and published the numbers.
What do you grab in 5 minutes, 30 minutes, or 1 hour?
This tiering is ours, not a published standard. But deciding the order now beats deciding it at 2 a.m. with a deputy at the end of the driveway.
5 minutes. People and pets, in carriers. Phone and charger. Keys and wallet. Medications. The staged kit. Shoes on, long sleeves on. That is it. You go.
30 minutes. Add the 6 Ps, which CAL FIRE teaches and local emergency managers repeat, including the City of Goleta: people and pets; papers and phone numbers; prescriptions, vitamins, and eyeglasses; pictures and irreplaceable memorabilia; personal computer hard drives; and "plastic" (credit and ATM cards) and cash. Then shoot the walk-through video.
1 hour. Add bulk water and food, extra clothing, bedding, and the air cleaner. Local emergency managers such as the City of Los Altos recommend 1 gallon of water per person per day and at least a 3 day supply of non-perishable food, 7 days if you have space.
Notice what is not in the 5 minute tier: anything you have to find. That is the point of staging.
Frequently asked questions
Does an N95 protect you from wildfire smoke?
Partly. A NIOSH Approved N95 filters PM2.5, the fine particles EPA calls the principal public health threat in smoke. It does not filter the gases and vapors, including carbon monoxide, and it does not supply oxygen. It protects a short trip through bad air, not a day in it.
What AQI is dangerous for wildfire smoke?
101 and above crosses the national air quality standard, and 151 to 200 is labeled Unhealthy for everyone. NIOSH advises staying indoors when air quality is unhealthy and going outside only when it is Good or Moderate. No agency publishes an AQI that requires you to leave home.
What should you wear during a wildfire evacuation?
Long pants, a long-sleeved top, and sturdy shoes, in 100 percent cotton or wool. CAL FIRE recommends covering your skin and says cotton is best. Avoid synthetic athletic fabric, which can melt. Add leather gloves and sealed goggles, and keep shoes by the bed in fire season.
How long should a wildfire emergency kit last?
Plan for 3 days minimum, 7 if you can store it. Local emergency management guidance commonly cites 1 gallon of water per person per day plus a 3 day food supply. Fire evacuations often run longer, because roads and power stay out after the flame front passes.
Is a DIY box fan air cleaner safe to run overnight?
Only with a newer fan. EPA says to use box fans built in 2012 or later carrying a UL or ETL mark, and warns against running older fans unattended or while sleeping. Skip extension cords, check the filter daily, and replace it once it looks dark or smells smoky.
The numbers, in one place
Item | Figure | Source |
|---|---|---|
PM2.5 particle size | Less than 2.5 micrometers | NIOSH |
Red Flag Warning criteria | Winds 15 mph or more, humidity 25 percent or below, above 75 degrees F, within 24 hours | NWS |
AQI above the national standard | 101 and higher; 151 to 200 is Unhealthy | AirNow (EPA) |
HVAC filter | MERV 13, or the highest your system allows | EPA |
DIY cleaner, one 1 inch filter | CADR about 111 | EPA |
DIY cleaner, 4 inch filter plus shroud | CADR about 248 | EPA |
Safe box fan build year | 2012 or later, UL or ETL mark | EPA |
Water and food | 1 gallon per person per day, 3 days minimum | City of Los Altos |
Pet food and water | 2 weeks per pet | CAL FIRE |
Minimum age for a respirator | 2 years old | NIOSH |
You don't have to be extreme to be ready. Buy the respirators this week, put the cotton shirt in the bag, and move the kit to the coat closet. That is 30 minutes of work.
You never know, but you can always be ready.
Sources: CDC NIOSH, Protecting Workers and the Public from Wildfire Smoke; CDC NIOSH, Wildfire Smoke: What to Know; CDC, About Wildfires; EPA, Why Is Wildfire Smoke a Health Concern?; EPA, Wildfires and Indoor Air Quality; EPA, Research on DIY Air Cleaners to Reduce Wildfire Smoke Indoors; AirNow (EPA), Air Quality 101; NOAA National Weather Service, Glossary: Red Flag Warning; CAL FIRE, Ready for Wildfire Evacuation Guide; California Office of the State Fire Marshal; City of Goleta, California, Pre-Evacuation; City of Los Altos, California, Emergency Supply Kits.