Get pets indoors before the dust wall arrives, because NWS says dust storms strike with little warning. Then close the windows, run an air purifier in the room where the pets are, and watch short-muzzle dogs more closely. Afterward, call your vet if eyes look irritated, and know the Valley Fever signs if you live in the Southwest.
Dust-storm safety guidance is written for people and cars. As of September 29, 2026, the National Weather Service’s Dust Storms and Haboobs page does not mention pets, and neither do the dust storm sections of its Phoenix and Tucson monsoon pages. Those monsoon pages carry a few pet lines elsewhere, in their lightning, heat, supply kit and storm-loss sections. Our Arizona monsoon prep calendar works through what those lines say. This page applies the weather service’s description of the storm, and what veterinary sources say about the hazards it leaves behind, Valley Fever and dust in the lungs and eyes.
If a Dust Storm Warning is active and you’re driving with a pet in the car right now, don’t keep reading. Follow Arizona DOT’s Pull Aside Stay Alive steps below and get off the roadway. Come back to this once you’re stopped and safe.
A haboob strikes with little warning
Per the National Weather Service, haboobs occur as a result of thunderstorm outflow winds, and strong thunderstorm winds can start a dust storm that drastically reduces visibility. A dust storm usually arrives suddenly in the form of “an advancing wall of dust and debris which may be miles long and several thousand feet high.” NWS also says dust storms usually last only a few minutes.
Two NWS documents describe the warning at different widths. The national page says your forecast office will issue a Dust Storm Warning if a dust storm is happening in your area. The NWS Glossary says the product is issued when a convectively driven dust storm is reducing visibility to a quarter mile or less, and winds of 25 mph or greater are usually required. Usually, not always. The forecast office decides when to issue the warning, so have your pets in before then.
NWS says these storms strike with little warning. Treat any sight of an approaching wall as your whole window. Because there is so little warning, decide before dust season where the pets will go and how you will get them there.
If you are driving when a wall of dust appears, Arizona DOT’s Pull Aside Stay Alive campaign gives this sequence:
- Check traffic around your vehicle and start slowing down immediately.
- Don’t wait until poor visibility makes it difficult to pull off the roadway; do it as soon as possible, and exit the highway completely if you can.
- Never stop in a travel lane or the emergency lane. Get completely off the paved roadway.
- Turn off all vehicle lights, including hazards, so no one mistakes your position for the lane and follows your lights into a collision.
- Set the parking brake and take your foot off the brake pedal, so your brake lights don’t stay lit.
- Stay in the vehicle, seatbelt buckled, until the storm passes.
ADOT’s tips do not mention passengers or pets. The pet layer is ours, not ADOT’s or NWS’s: a crated or leashed pet stays inside the stopped vehicle with you, not loose in the cabin where a sudden stop or an opened door in zero visibility could let it bolt.
Before it hits: get pets in now
The warning window is short, so this has to be a standing habit through dust season, not a scramble after an alert. NWS Tucson’s monsoon safety page says the Southwest NWS offices define the monsoon season as June 15 through September 30.
- Bring pets indoors at the first sign of a building haboob, not once it has reduced your visibility. A distant wall of dust is your cue.
- Close windows and doors. Cornell’s advice for poor air quality is to stay indoors with windows and doors closed.
- Keep at-risk pets in longer, well past the moment the wall has gone through. Cornell’s list of dogs at greater risk from poor air quality is brachycephalic breeds, geriatric and pediatric animals, and dogs with pre-existing conditions such as heart disease or asthma. If the at-risk pet is a cat with diagnosed asthma, our asthma inhaler go-bag guide covers the spare-canister and written-plan side.
- If driving, follow the ADOT sequence above and keep pets secured inside the stopped vehicle.
- Check your local advisory before letting pets back outside. The wall passing is not the air clearing. As of September 29, 2026, ADEQ’s page said it issues a High Pollution Advisory when ozone or particulate matter levels are imminent or have a high probability of exceeding the federal health standard, and that an advisory encourages people to limit outdoor activities and reduce driving.
- Subscribe to the forecast. ADEQ says it issues a High Pollution Watch two to five days ahead when the forecast shows potential for an ozone or particulate exceedance, then upgrades it to an advisory the day before if conditions hold. Its forecast subscription arrives as a weekday email, with a daily text message optional; the text option does not apply to Dust Risk forecasts.
The single fastest thing you can do this week: pick the one interior room you would close a pet into if a haboob warning hit during a work call or overnight, and make sure its door seals against a draft.
Indoor air during and after
Outdoor particulate gets into a home through open windows, doors and gaps. Closed windows and a portable air cleaner reduce how much outdoor particulate stays in the air you and your pets breathe. EPA’s guidance on indoor particulate matter lists “road dust” alongside smoke and car exhaust as outdoor sources. Its advice: keep windows closed when outdoor pollutants are high, check AirNow.gov for local air quality, use portable air cleaners, and, if you upgrade an HVAC filter, choose at least MERV 13 or as high a rating as your system fan and filter slot can accommodate. EPA says you may need an HVAC technician to determine the highest efficiency filter your system can take.
If you buy a purifier, manufacturers publish a separate Dust CADR alongside Smoke CADR, and the two numbers are not always identical. The Coway Airmega AP-1512HH Mighty is rated 246 CFM for dust and 233 CFM for smoke on Coway’s spec page. Check the dust-specific number rather than assume a smoke rating tells the whole story. A True HEPA unit is the type we suggest; the sizing math is on our wildfire smoke page.
The indoor steps are the same as for wildfire smoke, but the timing differs. NWS says dust storms usually last only a few minutes, so the aim is to get the purifier running fast in the room where the pets already are. Our wildfire smoke page covers the longer smoke version. Our purifier pick and its dust and smoke CADR are in the picks below.
Valley Fever: what Southwest dog owners should recognize
This section is recognition-level only: what it is, how dogs are exposed, what to watch for. It is not a diagnosis or treatment guide; that is a conversation with your veterinarian.
What it is. Valley Fever, medically coccidioidomycosis, is a fungal infection from Coccidioides organisms in Southwest desert soil. Per the University of Arizona’s Valley Fever Center for Excellence, the fungus grows in the soil and dries into fragile strands that break apart into airborne spores when the soil is disturbed. The Center lists digging, walking, construction and high winds as disturbances. The Merck Veterinary Manual adds the seasonal link: spores may be carried on dust particles, and epidemics may occur when rainy periods are followed by drought, resulting in dust storms.
How dogs are exposed. Dogs inhale spores from dust and air, the same route as humans. Per the Center, dogs traveling through or wintering in these areas have about the same chance as their owners of being infected. It names three dog behaviors to discourage: activities that generate dust, digging, and sniffing in rodent holes. It says approximately 6-10% of dogs living in Arizona’s Pima, Pinal and Maricopa counties become sick with it each year, and that the rate elsewhere in the endemic range is not known but is lower in most places than in central and southern Arizona. Dogs primarily contract it in “the low desert regions of Arizona, New Mexico and southwestern Texas and the central deserts of California”, and PetMD (Jennifer Coates, DVM) extends that range to Nevada and Utah.
You can’t tell from one dust storm. About 70% of dogs who inhale the spores control them quickly, per the Center, which adds that these dogs are asymptomatic and probably immune afterward. Not every dog that breathes in spores becomes sick, and only a veterinarian’s evaluation can tell whether a dog has the infection.
Signs to recognize, not treatment. Per the Merck Veterinary Manual, dogs with lung-only disease often show cough, lethargy, inappetence, fever and rapid breathing. Call your veterinarian if you see them. Merck puts spread beyond the lungs at roughly 20% of canine infections. Dogs with central nervous system involvement most often show seizures, with balance problems, asymmetric cranial nerve signs, behavior changes and compulsive circling also seen. Disseminated disease may also bring anorexia, weight loss, lameness, skin lesions, subcutaneous masses, enlarged joints and eye abnormalities. Seizures, sudden vision changes, or a dog that collapses or can’t stand are an emergency: go to an ER vet now, don’t wait for a scheduled appointment. None of these signs is exclusive to Valley Fever, so a vet’s evaluation, not a home guess, determines the cause.
Reducing exposure, per the Center: avoid activities that generate dust, reduce digging by dogs, prevent sniffing in rodent holes, and keep dogs indoors more than outdoors. The Center writes that last one as a general habit in an endemic area, not as a during-the-storm instruction. Keeping a dog in for the wall itself is this page’s own advice, and it does not replace the year-round version. The Center also says treating the soil is not practical, since the fungus lives in spotty areas and up to twelve inches deep, but that yard ground cover which reduces dust helps: grass and deep gravel or other dust-controlling cover. It describes a canine vaccine as a future possibility, not something available now.
Dusty eyes and coat after exposure
Dust can irritate a dog’s eyes. Cornell lists red or watery eyes among the most common signs of exposure to poor air quality, along with coughing, gagging, a fast breathing rate at rest and difficulty breathing. Cornell says to contact your veterinarian if you have concerns about your pet’s exposure risk or symptoms.
Eyes. For minor irritation from dust or other small particles, Fear-Free Certified veterinarian Dr. Gabre Denton, quoted by the AKC, suggests flushing with sterile saline. That is one veterinarian’s general advice, not a plan for your dog. AKC’s cleaning steps are written for minor discharge or for when your veterinarian has told you to clean the eyes. Ask your vet what to use and how.
Dr. Denton says human eye-cleaning solutions made solely of sterile saline are safe, and cautions against other human products because their additives could be harmful to dogs. He says to avoid alcohol-based products, hydrogen peroxide, and harsh materials like rough cloth or cotton swabs. The AKC article adds essential oils, soaps and homemade remedies as things that could be irritating, damaging or even toxic.
Call your vet if it is more than dust. Dr. Denton lists excessive, thick, malodorous or discolored discharge, redness, swelling, squinting, excessive blinking, or frequent rubbing of the eyes as causes for concern. He also recommends seeking help if a minor irritation persists or worsens, and the AKC says that could relate to an eye injury or a foreign object stuck in the eye.
Coat. No veterinary or weather source cited on this page gives a coat-cleanup procedure for dust. Ask your veterinarian or groomer what suits your dog’s skin and coat.
Indoor potty fallback during dust and poor air
A single haboob usually passes in minutes. A monsoon season does not: back-to-back dust events and High Pollution Advisories can stack up, and a dog used to yard trips every few hours has a real problem when you are keeping pets away from that air. Cornell’s advice for poor air quality is to limit outdoor time to bathroom breaks, so pads are a backup for the minutes the dust wall is passing and for days when you want the dog out as little as possible.
Cats mostly sidestep this since litter boxes are already indoors. Move the box away from an exterior door or a drafty window while the air is bad.
Below: a purifier for the room, an eye and ear wipe for routine upkeep, and pads for the days your dog cannot go out.