Home / Fire / Wildfire Smoke and Livestock

Wildfire Smoke and Livestock

Smoke can drift hundreds of miles from a fire, and it affects animals and the people who care for them. This guide explains what to watch for and where to get species-specific advice.

Why does wildfire smoke matter for animals?

Smoke is a mix of fine particles and gases. Animals breathe it in just as people do, and the fine particles can irritate eyes, noses, throats and lungs. Animals that are already stressed, young, old or dealing with respiratory disease may be affected more.

Because species differ so much, from poultry to horses to dairy cattle, avoid general rules about how much smoke is too much. Your veterinarian and your state extension service can give advice that fits your animals.

Smoke conditions change hour by hour with wind and fire behavior, so check updates through the day. A calm morning can turn smoky by afternoon, and animals kept outside or in poorly ventilated buildings feel the change as quickly as you do.

What signs of trouble should I watch for?

Watch for changes in breathing, coughing, nasal or eye discharge, reduced appetite, lower milk or egg output, and animals that seem dull or reluctant to move. Any change from normal is worth noting, even if small.

Call your veterinarian if you see breathing trouble or if an animal seems to be getting worse. If an animal is in severe distress, do not wait for it to pass.

Keep a simple log of what you observe, with times, so you can describe the pattern to your veterinarian. Details such as which animals were affected first, whether they had been worked or hauled, and how long the smoke lasted help a professional judge what is going on.

• Open-mouth or labored breathing
• Persistent coughing
• Watery or red eyes
• Animals that stop eating or drinking
• Less activity than usual

How can I reduce stress during smoky days?

Keep fresh water available and easy to reach. Limit hard work, hauling and handling when air is poor, since exertion makes animals breathe harder. Try to keep routines calm and predictable.

Housing choices can matter, but confined animals can face their own heat and ventilation problems. Ask your veterinarian or extension office before changing how animals are housed in smoke.

What about the people doing the chores?

You and your workers also breathe the smoke, and farm work is heavy exertion. Check air quality information from your local or state air agency and national sources before planning long outdoor jobs, and consider shifting work to cleaner hours if you can.

Respirators are not all alike, and a dust mask or cloth covering may not protect against fine smoke particles. Ask NIOSH, OSHA or your extension office what kind of protection suits your situation and how to use it correctly, including fit and training requirements.

How do I watch for ash and feed or water problems?

Ash can settle on pasture, feed, water troughs and equipment. Ask your veterinarian or extension office whether and how to protect or test feed and water after heavy ashfall, rather than guessing.

If you are in the path of a fire, think about where you store feed and whether it is protected. After the event, inspect stored feed and water sources before animals use them.

When should I call for help?

Call 911 if people or animals are in immediate danger from fire. For animal health questions, contact your large animal veterinarian. For questions about air quality and health for yourself, contact your health care provider, especially if you have asthma, heart or lung conditions.

Keep notes on what you saw and when, since your veterinarian and, if you have one, your insurer may ask.

How do I keep working safely in smoky conditions?

Smoke makes ordinary farm work riskier. Visibility can drop on roads and in fields, equipment operators may tire sooner, and people with asthma, heart or lung conditions may have trouble. Plan fewer, shorter tasks, work in pairs and keep a way to call for help.

Skip burning, welding or other spark-producing jobs when conditions are dry and windy, and follow any burn restrictions your county or state sets. Check with your local fire authority about whether outdoor burning and equipment use are restricted, because rules change with conditions.

Pay attention to your own body. Headaches, chest tightness, dizziness or unusual shortness of breath are reasons to stop and get indoors to cleaner air. Call 911 for severe symptoms, and talk with your doctor about anything that lingers after the smoke clears.

• Check local air quality information before big jobs
• Take breaks indoors in cleaner air when you can
• Watch workers and family for symptoms and let them rest

Last reviewed: November 12, 2026. Written by the Farm Safety Editorial Team. See our editorial policy.