McHardy Vacuum Blog

Research shows that growing wildfires are reversing decades of North American clean-air progress, pushing national smog (ground-level ozone) back up after years of decline. Wildfire smoke does not stay near the flames—it travels hundreds to thousands of kilometers, raising ozone and fine-particle pollution far downwind and worsening conditions like asthma. With the increase of wildfires appearing across the nation, Austin Air is here to protect the air in your home from the harmful impacts of wildfire smoke. You cannot control the fires, but you can control your indoor air. A medical-grade HEPA air purifier with activated carbon, like an Austin Air unit, captures the fine smoke particles (PM2.5) and adsorbs the gases and VOCs that wildfire smoke carries indoors. ¹ ²

To Austin Air and the McHardy's Team, the impacts of wildfires and air pollution are not an abstract trend. They are a reminder of why the air inside your home matters more now than it did even ten years ago.

How far does wildfire smoke travel?

Wildfire smoke is not a problem for the people nearest the burn exclsuivley, smoke and its chemical byproducts travel across provincial lines and settle over communities that may never see a flame—which is exactly why "is there wildfire smoke near me?" spikes across the country during a bad fire season, even in places far from any fire. Environment and Climate Change Canada track the drifting smoke using their MSC AniMet system precisely because the haze you wake up to can originate a thousand kilometers away.³

That reach is what makes this a national health story, not a regional one.

Is wildfire smoke bad for you? What the health research shows

Yes—and the danger is not limited to the smoky haze you can see. Higher daily smog is associated with more asthma attacks, and the fine particles in smoke (PM2.5) are small enough to slip past the body's defenses, lodge deep in the lungs, and enter the bloodstream. ³

Children, older adults, pregnant people, and anyone with asthma, COPD, or heart disease feel it first and worst. Even healthy adults report headaches, fatigue, sore throats, and trouble breathing on heavy-smoke days.

When the air outside turns hazardous, most people do the sensible thing and go indoors. But smoke does not stop at the door. Fine particles infiltrate homes, schools, and offices through gaps, vents, and every time a door opens. Because people spend the overwhelming majority of their lives inside, the air in your living room during a smoke event is not a refuge by default—it is only as clean as you make it. ³

Wildfire Smoke Symptoms To Watch For

Smoke affects people differently, and some signs are easy to mistake for a cold, allergies, or "just being tired." Pay attention to how you and your family feel during a smoke event — especially anyone with asthma, allergies, COPD, or a heart condition, who tend to feel it first and most strongly.⁶

^{Common & Mild Symptoms of wildfire smoke:} 

• Coughing, throat irritation, or a scratchy sore throat
• Watery, itchy, or burning eyes
• Runny or stuffy nose and sinus pressure
• Headache
• Sneezing and general congestion
• Unusual tiredness or "brain fog" — even if you never smelled smoke⁶

^{More Serious Symptoms of wildfire smoke:}

• Shortness of breath or difficulty breathing
• Wheezing or a persistent, worsening cough
• Chest tightness or chest pain
• Heart palpitations or a racing heartbeat
• Dizziness or lightheadedness
• A noticeable flare-up of asthma or COPD⁶

^{Symptoms Requiring Medical Attention of wildfire smoke:}

Trouble breathing, chest pain or pressure, a rapid or irregular heartbeat, confusion, or severe dizziness are not "wait and see" symptoms. If they appear — especially in someone with a heart or lung condition, a young child, an older adult, or a pregnant person — contact a doctor promptly.⁶

What you cannot control, and what you can

You can't regulate a wildfire. You can't pull ozone out of the sky over your city, and you can't undo a fire season. What you can control is the air in the one place you spend most of your time.

This is where filtration earns its keep. Wildfire smoke is, at its core, a dense cloud of fine particulatres carrying a load of gases and chemical odors. Ground-level ozone and small harmful particulates, which come together to create smog, are the large concern when it comes to the impacts of wildfire smoke. The right air purifier for wildfire smoke has to address both halves of that problem:

• The particles. Medical-grade HEPA filtration is designed to capture 99% of particles down to 0.1 microns—well into the size range of wildfire soot and the fine PM2.5 that drives smoke's worst health effects. A standard HEPA air purifier for smoke handles this layer of the problem.

• The gases and VOCs. This is where most consumer purifiers fall short. Pounds of impregnated activated carbon and zeolite are needed to adsorb the volatile organic compounds wildfire smoke carries—many of them the very precursor chemicals this study ties to rising ozone. A particle filter alone cannot catch them.

That combination is not a seasonal marketing claim. Austin Air Purifiers, built by hand in Buffalo, New York, are sealed steel housings with a filter life measured in years, these machines are designed for exactly the kind of sustained, season-long exposure this discourse describes. ⁴

The best air purifiers for wildfire smoke, and a free resource to go deeper

Austin Air created the free Wildfire Toolkit for moments like the one this study describes. It gathers, in one place, what is actually in wildfire smoke, how it affects the body, how far it travels, who is most at risk, and how to clean up the smoke, gases, and VOCs that linger indoors long after a fire is out. It also includes The Long Burn, a seven-part series in which physicians, environmental-health researchers, wildfire experts, and families who lived through the fires follow smoke from the fire line to the air inside your home. ⁵

The toolkit also points to the two Austin Air purifiers built specifically for smoke. Both pair medical-grade HEPA with carbon impregnated with additional minerals, engineered to adsorb the toxic gases and VOCs in wildfire smoke that ordinary filters miss:

• The HealthMate Plus—built for smoke, chemicals, and gases, and a long-standing choice for wildfire country.

• The Immunity Machine—Austin Air's most advanced filter, combining particle, gas, and biological-defense layers.

If this study gave you reason to think harder about the air your family breathes, the toolkit is a sound place to start. It is free, built to be shared, and turns a worrying headline into something you can act on.

The takeaway

We cannot put out the fires. We can help you keep their smoke out of the air your family breathes indoors. That has been Austin Air's work for more than thirty years, and studies like this one are why it matters more, not less, with each passing summer.

Frequently asked questions about wildfire smoke

Is wildfire smoke bad for you? 

Yes. Wildfire smoke contains fine particulate matter (PM2.5) and gases that can trigger asthma attacks, irritate the lungs, and enter the bloodstream. Short-term exposure is linked to headaches, fatigue, coughing, and breathing trouble, and higher ozone and particle levels are associated with increased hospital visits and deaths. Children, older adults, pregnant people, and those with asthma, COPD, or heart disease face the highest risk. ^{1 3}

How far does wildfire smoke travel? 

Much farther than most people expect. Wildfire smoke and the chemical precursors that form smog can travel hundreds to thousands of miles, which is why communities far from any active fire can experience hazy skies, reduced air quality, and elevated ground-level ozone for days at a time. ^{1 3}

What is ground-level ozone, and how is it linked to wildfire smoke? 

Ground-level ozone is the main ingredient in smog. Wildfires do not emit ozone directly, but they release precursor chemicals that react with sunlight to form it. As wildfires have grown, those emissions have pushed national ozone levels back up, reversing earlier clean-air progress, according to the 2026 study in Science. ^{1 2}

How can I protect myself from wildfire smoke indoors? 

Stay indoors on heavy-smoke days, keep windows and doors closed, avoid activities that add indoor pollution, and run a medical-grade air purifier sized for the room. Because smoke infiltrates buildings, indoor air is only as clean as your filtration makes it—a purifier with both HEPA and activated carbon is the most effective in-home defense. ^{3 4}

Do air purifiers help with wildfire smoke, and what is the best air purifier for wildfire smoke? 

Yes, when they are built for it. The best air purifier for wildfire smoke combines true medical-grade HEPA to capture fine soot particles with several pounds of activated carbon to adsorb smoke's gases and VOCs. Austin Air's HealthMate Plus and Immunity Machine are engineered specifically for smoke, chemicals, and odors. ⁴

Does a HEPA filter alone remove wildfire smoke? 

A HEPA filter captures the fine particles in smoke very effectively, but particles are only half the problem. Wildfire smoke also carries gases and volatile organic compounds that pass straight through a particle-only filter. Removing those requires activated carbon, which is why purifiers that pair HEPA with substantial carbon outperform HEPA-only models during smoke events. ⁴

Interested in an Air Purifier or a New Vacuum?

At McHardy Vacuum, we carry everything you need to clean smarter, not harder—from vacuums and air purifiers to filters and floor care products.

Visit us in-store or online at mchardyvac.com

References

1. Associated Press. (2026). Wildfires are making the US smoggy again, reversing progress on cleaner air, study finds. (Carried by KXAN and other outlets.) https://www.kxan.com/news/simplehealth/ap-health/ap-wildfires-are-making-the-us-smoggy-again-reversing-progress-on-cleaner-air-study-finds/

2. Deng, W., et al. (2026). Study on wildfire smoke and rising ground-level ozone, published in Science. Summarized in Associated Press coverage, 2026.

3. Government of Canada. Ventilation Index. MSC AniMet. https://www.canada.ca/en/environment-climate-change/services/air-quality-health-index/weather.html#a2 and MSC AniMet

4. Austin Air Systems. Clinical Trials. https://austinairsystems.com/pages/clinical-trials 

5. Austin Air Systems. Wildfire Toolkit (free resource), including The Long Burn seven-part series. https://info.austinair.com/wildfire-toolkit 

6. Austin Air Systems. Wildfire Smoke Safety. https://austinairsystems.com/pages/wildfire-smoke-safety