If the sky outside your window looks hazy, tastes metallic when you step outside, or smells faintly like a campfire that's a few blocks too close, your pets are noticing it too. As smoke from the ongoing Canadian wildfires continues to drift into New York and across much of the Northeast, Midwest, and Mid-Atlantic, air quality alerts have become a near-weekly occurrence this summer. And while most of us instinctively reach for a mask or head indoors when the AQI climbs, our pets don't have that option. They can't check an app, they can't voice that their chest feels tight, and they definitely can't put on an N95.
That's where we come in. This guide breaks down exactly how wildfire smoke affects animals, which pets face the highest risk, and the practical, vet-backed steps you can take right now to protect the ones who depend on you to notice what they can't tell you.
Why Wildfire Smoke Is So Dangerous for Pets
Wildfire smoke isn't just an unpleasant smell. It's a cocktail of fine particulate matter, commonly referred to as PM2.5, along with gases like carbon monoxide and volatile organic compounds. PM2.5 particles are so small, about 1/30th the width of a human hair, that they bypass the body's natural filtering system and travel deep into the lungs. From there, they can enter the bloodstream and trigger inflammation throughout the body, not just in the respiratory tract.
Pets are arguably more vulnerable to this than we are, for a few key reasons:
- They breathe faster. Dogs and cats have higher respiratory rates than humans relative to their size, meaning they take in more air, and more pollutants, per minute.
- They're closer to the ground. Many pollutants and particulates settle lower to the ground where dogs, cats, and especially small animals spend their time.
- They can't protect themselves. Humans can mask up, close their mouths, or simply decide to stay inside. Pets rely entirely on us to make that call for them.
- Their sense of smell is exponentially stronger. Veterinarians note that dogs and cats are far more sensitive to odors than people are, which means smoky air that's merely unpleasant to us may be overwhelming to them.
According to veterinary guidance from the American Veterinary Medical Association, animals with pre-existing heart or lung disease are at the highest risk of respiratory distress during smoke events, but veterinary hospitals have also reported an uptick in breathing difficulties among otherwise healthy pets during heavy smoke periods.
The Current Situation: Why This Matters Right Now
This isn't a hypothetical. As of this week, wildfire smoke from hundreds of active fires burning across Canada, including a major cluster in northwestern Ontario, has pushed air quality into unhealthy territory across New York State, New Jersey, and much of the Northeast, with the smoke also affecting the Great Lakes region, the Midwest, and areas as far south as Pennsylvania, Ohio, and the Mid-Atlantic. New York City has seen AQI readings climb into the "Unhealthy" range this week, and state officials have issued air quality health advisories covering the entire state.
This kind of event isn't a one-off. Canadian wildfire activity has been elevated for several summers running, and smoke plumes have repeatedly traveled hundreds to thousands of miles into the U.S., meaning pet owners well outside traditional wildfire zones, including places like New York, New Jersey, Connecticut, and across the Midwest, need to treat smoke season as a recurring part of summer pet care, not a rare emergency.
Bottom line: if you live anywhere near the path of these smoke plumes, whether you're dealing with visible haze or just a nagging "off" smell in the air, it's worth building smoke safety into your routine the same way you would flea prevention or heat safety.
Which Pets Are Most at Risk?
While every pet can be affected by poor air quality, some are considerably more vulnerable and need extra vigilance during smoke events.
Brachycephalic (flat-faced) breeds
Dogs like Bulldogs, Pugs, Boston Terriers, and Shih Tzus, along with flat-faced cat breeds like Persians and Himalayans, already have narrower airways. Smoke exposure can compound their existing breathing challenges significantly.
Senior pets
Older animals often have some degree of underlying heart or lung changes even without a formal diagnosis, and their bodies are generally less resilient to environmental stress.
Puppies and kittens
Young animals have smaller, still-developing airways and immune systems, making them more susceptible to irritation and infection.
Pets with existing heart or respiratory conditions
Animals with asthma, bronchitis, congestive heart failure, or other cardiopulmonary conditions are at the highest risk of a serious reaction during smoke events and should be watched especially closely.
Birds
Birds have an extremely efficient, and extremely delicate, respiratory system that makes them exceptionally sensitive to airborne toxins. Pet birds should never be allowed outside during smoke events and, in more severe cases, may need to be moved away from windows or doors entirely.
Small mammals
Rabbits, guinea pigs, and other small pets with sensitive respiratory systems should also be kept away from open windows and doors when air quality is poor.
Signs Your Pet Is Being Affected by Smoke
Because pets can't tell us in words how they're feeling, it's on us to watch for physical and behavioral changes. Contact your veterinarian promptly if you notice any of the following:
- Coughing, gagging, or wheezing
- Difficulty breathing or unusually fast, shallow breaths
- Open-mouth breathing (especially in cats, which is always a red flag)
- Eye irritation: redness, squinting, or excessive watering
- Nasal discharge or unusual sneezing
- Fatigue or reduced activity level
- Reduced appetite
- Disorientation or stumbling
- Existing conditions, like asthma or heart disease, appearing to worsen
If your pet shows any signs of severe respiratory distress, such as blue-tinged gums, collapse, or an inability to catch their breath, treat it as an emergency and get to a veterinarian immediately.
Your Wildfire Smoke Safety Checklist
1. Check the AQI before you head out
Before every walk or outdoor break, check a live air quality resource such as AirNow.gov or your state's environmental agency site. As a general rule of thumb endorsed by veterinary experts: if you can see haze, smell smoke, or feel it in your own throat, your pet is experiencing it too, likely more intensely.
- AQI 0–100: Generally safe for normal outdoor activity, though sensitive pets should still be monitored.
- AQI 101–150 (Unhealthy for Sensitive Groups): Shorten walks and skip strenuous exercise, especially for at-risk pets.
- AQI 151–200 (Unhealthy): Outdoor time should be limited to brief bathroom breaks only.
- AQI 200+ (Very Unhealthy to Hazardous): Keep pets indoors entirely except for the shortest possible bathroom breaks.
2. Keep outdoor time brief and low-intensity
On smoky days, swap the long run or extended fetch session for a quick, calm bathroom break on a leash. Avoid strenuous exercise entirely; heavy breathing during exercise pulls more polluted air deeper into the lungs.
3. Time walks strategically
If air quality tends to improve at certain points in the day (often early morning, before heat and smoke build up), aim outdoor breaks for those windows, and always check current conditions rather than relying on yesterday's forecast.
4. Create a clean-air space indoors
Close windows and doors, and if you have central air conditioning, run it on recirculate mode rather than pulling in outside air. A HEPA air purifier in the room where your pet spends the most time can meaningfully reduce indoor particulate levels.
5. Keep fresh water available at all times
Smoke exposure can be dehydrating and irritating to the respiratory tract, so make sure water bowls are full and easily accessible throughout the day.
6. Skip the mask, focus on avoidance
Unlike people, pets can't safely or effectively wear masks to filter smoke. The most reliable protection is simply limiting their exposure to smoky outdoor air in the first place.
7. Watch birds and small pets especially closely
Keep birdcages and small-mammal enclosures away from windows, doors, and drafts during smoke events, and consider relocating them to an interior room if air quality is severe.
8. Know when to call the vet
If you notice any of the warning signs above, don't wait it out. Early veterinary attention can prevent a mild irritation from becoming a more serious respiratory event, particularly in pets with existing heart or lung conditions.
9. Keep grooming routines light and gentle
Smoke particles can settle in your pet's coat, and irritated skin or a scratchy throat isn't the moment for a vigorous grooming session. Stick to gentle wipe-downs (a damp cloth on paws and coat after outdoor breaks helps remove settled particulates) rather than anything that stirs up additional dust or requires prolonged time near open windows.
10. Build a simple emergency kit
Since smoke events often arrive alongside other summer hazards like extreme heat, it's worth having a small kit ready: extra water, any medications your pet needs, a recent photo, and your vet's contact information, so you're prepared whether the issue is smoke, heat, or both.
A Note on Heat and Smoke Together
This summer's air quality events have consistently coincided with dangerous heat waves, and that combination is particularly hard on pets. Heat increases respiratory rate on its own, which means a pet panting from heat is also pulling in more smoke-laden air. If your area is under both a heat advisory and an air quality alert, treat outdoor time with extra caution and prioritize a cool, filtered indoor space over any outdoor activity that isn't strictly necessary.
FAQ: Wildfire Smoke and Pet Safety
Can dogs get sick from wildfire smoke even if they seem fine at first? Yes. Respiratory irritation can build gradually, and some pets won't show obvious symptoms until exposure has continued for a while. This is especially true for pets with underlying conditions that haven't been formally diagnosed.
Is it safe to walk my dog if there's an air quality alert? Short, low-intensity bathroom breaks are generally considered acceptable even during alerts, but extended walks, runs, or play sessions should be postponed until air quality improves, particularly once the AQI passes 150.
Do air purifiers actually help protect pets indoors? Yes. A HEPA air purifier can meaningfully reduce indoor particulate matter, especially in the room where your pet spends most of their time. Keeping windows and doors closed matters just as much.
How long does it typically take for pets to recover after a smoke event ends? Most healthy pets recover once air quality returns to normal and irritation subsides. Pets with pre-existing conditions may need a longer recovery window and closer monitoring, so check in with your veterinarian if you have any concerns.
Are cats at less risk than dogs since they often stay indoors? Indoor cats are generally at lower risk, but smoke can still infiltrate homes, particularly if windows are cracked or ventilation isn't filtered. Any open-mouth breathing in a cat should be treated as an urgent warning sign regardless of how much time they spend outdoors.
The PRIDE+GROOM Takeaway
Smoke season is becoming a recurring part of summer for pet owners well beyond the traditional wildfire regions, and the best defense is simple awareness: check the air quality before you head out, keep outdoor time short and calm, create a clean-air refuge at home, and know the warning signs that mean it's time to call your vet. Your pet is relying on you to make the call they can't make for themselves, and a little extra caution on hazy days goes a long way toward keeping them safe, comfortable, and breathing easy.
This article is intended for general informational purposes and is not a substitute for veterinary care. If your pet is showing signs of respiratory distress, contact your veterinarian or the nearest emergency animal hospital immediately.