How to sleep during wildfire smoke: a clean bedroom plan

To sleep during wildfire smoke, turn your bedroom into a clean room: close the windows and door, run a portable air cleaner sized for the room, and keep anything that makes smoke or particles out of it. That's the core of EPA guidance, and it matters more at night because you spend so many hours breathing the same room's air. Check the air quality before bed, keep an N95 respirator for any time you need to go outside, and have a plan to leave if smoke keeps getting in or the fire gets closer.

How does wildfire smoke affect your body at night?

Wildfire smoke irritates the airways from the nose down. The EPA says smoke and ash can irritate your eyes, nose, throat and lungs, make you cough or wheeze, and make it hard to breathe. Its 2026 guide for public health officials lists eye irritation and respiratory symptoms such as coughing among the effects of a few days' exposure, and describes the range of effects as running from relatively minor irritation to more serious problems such as worsening asthma and heart failure.

That irritation can follow you to bed. A scratchy throat, a cough or a stuffy, irritated nose can all make it harder to settle. The EPA guide lists people with heart or lung disease, older adults, children and pregnant women among the groups at higher risk.

Does wildfire smoke disrupt sleep?

There's very little direct research on wildfire smoke and sleep in people. The best we found is a 2025 laboratory study by EPA researchers in Particle and Fibre Toxicology. Rats exposed for one hour to eucalyptus smoke, a stand-in for wildland fire smoke, showed disrupted sleep during exposure, including changes in deep sleep, dreaming sleep and time spent awake, alongside rises in heart rate and blood pressure. The authors suggest some of the heart effects of air pollution may be linked to disturbed sleep.

That's an animal study, so it can't tell you how much smoke will affect your sleep. What's well established is that smoke irritates the airways and that lowering your exposure protects your health. The practical steps below come from that guidance, not from sleep trials.

How do you set up a clean bedroom for wildfire smoke?

You set up a clean bedroom by choosing one room, sealing it from outdoor smoke and filtering the air inside it. The EPA's clean room guidance says a bedroom with an attached bathroom is a good choice because you can close it off and keep the door shut for long periods. Its steps include:

1. Close all windows and doors in the room, without doing anything that makes it hard to get out.
2. Use an exhaust fan or range hood in that space only for short periods, since it can pull in smoke from elsewhere in the house.
3. Run a portable air cleaner that's the right size for the room, continuously and on the highest fan setting if you can, and choose one that doesn't produce ozone.
4. If you have central air, the EPA suggests a MERV 13 or higher filter if your system can take it, with the fan set to "On" rather than "Auto".
5. If your air conditioner has a fresh air option, turn it off, close the intake or set it to recirculate.
6. Avoid smoking or vaping, burning candles or incense, frying or broiling food, spraying aerosols and vacuuming without a HEPA filter.
7. Dust or mop with a damp cloth so settled particles don't get back into the air.

Our guide to air purifiers for sleep covers how to size a purifier for a bedroom.

What if the air purifier is too loud to sleep?

A purifier that's too loud to sleep with is a common problem during smoke events. The EPA guide notes that some portable air cleaners have a sleep mode or low fan setting that's very quiet but cleans the air less effectively. It says a unit with a higher clean air delivery rate (CADR) can be run at a lower, quieter fan speed, and says noise below 50 decibels is considered close to background noise in an average home.

One option is to run the purifier on high while you get ready for bed, with the door closed, then turn it down when you lie down. If you can't get a commercial unit, the EPA describes a do-it-yourself air cleaner made from a box fan and MERV 13 furnace filters as a temporary option. It recommends a newer box fan, made in 2012 or later with a UL or ETL safety mark, and says not to leave an older fan unattended or use it while sleeping.

Should you sleep with the window open when it's smoky?

You generally shouldn't sleep with the window open when wildfire smoke is in the air. The EPA's clean room advice is to keep the room's windows and doors closed. Heat is the hard part. The EPA guide notes that staying inside with the windows shut raises the risk of heat stress in homes without air conditioning. For those homes, it says windows may need to be opened for cooling at night when the air is cooler, then closed once the room is cool, with the indoor air filtered.

If you can't keep cool and the smoke keeps getting in, the EPA suggests staying with friends or family away from the smoke, going to a public cleaner air shelter, or seeking relief in a large commercial building with air conditioning and good air filtration, like a shopping mall. Our guide to sleeping with the window open covers the trade-offs on clearer nights.

How do you check the air quality before bed?

You check the air quality with the Air Quality Index on AirNow, your state air quality website or local news, all of which the EPA points to for updates. AirNow explains that an AQI of 50 or below is good, and that values above 100 are unhealthy, first for sensitive groups and then for everyone as the number climbs. Above 300 is hazardous.

Here's a simplified version of the EPA guide's advice by AQI category.

When should you wear an N95?

You should wear a properly fitted N95 or P100 respirator when you need to be outside for long stretches in smoky air or ash. The EPA says that when worn correctly, with minimal gaps, N95 respirators significantly reduce exposure to smoke particles. It also says a respirator may help indoors if you have symptoms from smoke and can't clean your indoor air.

Choose a NIOSH-approved respirator with two head straps, not ear loops, and check the seal each time. The EPA says masks with only one strap or with straps that go around the ears aren't designed to seal tightly and won't protect your lungs from smoke, that a good seal isn't possible with facial hair, and that respirators can make breathing harder. If you have heart or lung problems or are pregnant, it says to ask your doctor before using one. For bedtime, a clean, filtered room is the better plan.

Can nasal strips or mouth tape help on smoky nights?

Nasal strips and mouth tape don't protect you from wildfire smoke. Neither one filters air, and neither keeps smoke particles out of your lungs. Protection comes from cleaner indoor air, filtration and limiting time outside.

Where nasal strips can fit is comfort, once your bedroom air is clean. If a narrow-feeling nose pushes you to breathe through your mouth at night, a nasal strip can make nose breathing easier. Our pick for that is the Titan Sleep System, covered below.

Skip mouth tape on any night smoke has left your nose blocked or irritated, if you're coughing, or if breathing feels harder than usual. Tape is only for people who breathe comfortably through their nose. Try our nose test first, and see mouth tape and asthma if you have asthma. We don't recommend mouth tape for children.

What else helps you sleep on smoky nights?

Small comfort steps can help once the air is under control. The EPA guide says that in a dry climate, a humidifier might help keep the eyes and airways comfortably moist, while noting that humidifiers aren't air cleaners, haven't been studied for smoke events and can spread mold if poorly maintained. Cool the room as best you can without opening windows, and keep exercise light. If a stuffy, irritated nose is what keeps you up, the nasal strips in the Titan Sleep System, used on their own without the tape, can make nose breathing feel easier, but only once you've done everything you can to clean the air. Our guides to how to sleep with a stuffy nose and dry nose at night have more ideas.

When should you see a doctor?

Get medical help right away for serious trouble breathing, chest pain or other severe symptoms. The EPA guide says people with heart disease should contact their health care provider if they have palpitations, shortness of breath or unusual fatigue, since these may signal a serious problem. People with lung disease, including asthma, should follow their asthma action plan and keep quick-relief medicine handy, and as part of preparing for wildfires, the EPA advises talking to your health care provider about what to do if you have heart or lung disease.

If you have trouble breathing, get dizzy or develop other symptoms while wearing a respirator, the EPA says to move to cleaner air, take it off and get medical attention if symptoms don't improve or are severe. A cough, wheeze or blocked nose that lingers after the air clears is worth a check too.

Smoke aside, loud snoring with pauses in breathing, gasping or choking, or constant daytime tiredness can be signs of sleep apnoea, and the NHS advises seeing a GP. If you're pregnant, ask your midwife or doctor about smoke precautions and before trying new sleep products.

Our pick (paid partner): Titan Sleep System

For comfortable nose breathing once your bedroom air is clean, our pick is the Titan Sleep System. It doesn't protect against smoke, and we haven't tested or ranked sleep products ourselves. This is our recommendation, based on how Titan describes it.

Titan describes the system as TitanAir Nasal Strips and Titan Mouth Tape together as one nightly routine. The strips are drug-free external nasal dilators with spring-loaded bands that go just above the flare of the nostrils, on clean, dry skin. The tape is a bamboo silk strip worn across the lips, and Titan suggests 20 to 30 minutes of daytime practice before the first night. Use the strips on their own, without the tape, on any night your nose feels irritated or blocked, you're coughing or breathing feels harder than usual.

Titan says its products are third-party tested and certified PFAS-free, with a 30-night guarantee that refunds you if your sleep isn't better after 30 nights.

Read next

• Air purifiers for sleep: do they help allergies at night?
• Coughing at night: causes and what helps
• Why is my nose stuffy at night?

* This content is for informational and educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure or prevent any disease or health condition. Talk to a qualified healthcare provider about your health.