Air Quality and Pregnancy: 7 Vital Facts This Wildfire Season

Right now, on July 16, 2026, wildfire smoke is spreading over the Midwest, Northeast, and Mid-Atlantic. The Washington Post reports that this smoke is bringing unhealthy air to about 115 million people, and it’s expected to get worse through Friday. Air quality and pregnancy is a topic worth understanding today, not just on bad news days, if you’re pregnant and seeing hazy skies outside your window.

1. Bad Air Can Reach Your Baby

Smoke has tiny particles in it, so small you can’t see them. When you breathe them in, they can move from your lungs into your blood. That means what you breathe can also reach your baby. This is the heart of air quality and pregnancy: it’s shared exposure, not separate exposure.

2. Doctors Have Studied This, and the Risks Are Real

Studies on air quality and pregnancy show that breathing dirty air during pregnancy is linked to babies being born smaller, being born early, and moms developing high blood pressure or diabetes during pregnancy. One 2025 study even found that smoke particles can change how a pregnant body handles certain nutrients, which may be part of why it can lead to early labor.

3. The First Few Months May Matter Most

One study found that pregnant women exposed to smoky, polluted air between weeks 9 and 14 were almost 3 times more likely to have an early preterm birth. That’s early in pregnancy, often before you’d expect to need to worry about this kind of thing.

4. Is There a Test to See If Smoke Has Affected You?

There isn’t a simple home test that tells you “yes, the smoke hurt my pregnancy.” But your doctor has real tools to check on you if you’re worried. A pulse oximeter (a small clip-on device that costs about $10-20, or your doctor’s office already has one) checks your blood oxygen level in seconds, painlessly. Your doctor can also listen to your lungs and check your baby’s heart rate if you’re far enough along. If you’ve been in heavy smoke and feel off, the right move is a phone call to your OB, not guessing at home.

5. Take It Easy, and Stay Home When You Can

This one is simple: on smoky days, the safest thing you can do is less. Skip the errands that can wait. Skip the walk. If you’re able to work from home or take it slow today, do that. Your body is already working hard growing a baby, it doesn’t need extra strain from bad air on top of that. When it comes to air quality and pregnancy, rest is one of the most underrated forms of protection you have.

6. Cheap Things That Actually Help

You don’t need to spend a lot of money to protect yourself during a smoke event. Real options, and real prices:

• N95 masks ($1-$5 each) — these filter out the harmful smoke particles. Cloth masks do not.
• Free N95 masks are often available during active smoke events. Many cities distribute them for free when air quality alerts are in effect, right now, for example, New York City is handing out free KN95 masks at public libraries, NYPD precincts, FDNY firehouses, and major transit hubs during this week’s smoke event. To find free masks near you:
  • Check your public library. Many libraries stock and hand out free masks during air quality alerts.
  • Check your city or county health department website. They often post free mask distribution sites during smoke events.
  • Call 211 (a free, nationwide helpline) and ask if free masks are available near you.
  • Check community health clinics, which sometimes keep a small free supply on hand.
  • Availability changes fast, so check today rather than assuming, especially while this week’s smoke event is active.
• Box fan + MERV 13 filter ($40-$80 DIY) — one of the cheapest ways to clean the air in one room. Tape a furnace filter to a regular box fan.
• Door draft stoppers ($10-$20) — blocks smoke from sneaking in under doors.
• Weather stripping ($10-$15) — seals gaps around windows and doors.
• Indoor air quality monitor ($30-$100) — lets you see your actual indoor air in real time, not just guess.
• Saline nasal spray ($5-$10) — helps rinse smoke particles out of your nose.
• Artificial tears or eye drops ($8-$15) — smoke irritates the eyes fast, especially when you’re pregnant and already more sensitive.

7. If You Want a Real Air Purifier

If you can spend a bit more, look for one with a true HEPA filter and an activated carbon filter (the carbon helps with smoke smell), sized correctly for your room. Budget-friendly, well-reviewed options include the Levoit Core 300S for small rooms, the Levoit Vital 200S for larger rooms, the Coway Airmega AP-1512HH Mighty, and the Winix 5500-2.

8. Can You Get Off Work Because of Smoke?

Sometimes, yes. A doctor can write a note saying wildfire smoke is making pregnancy complications, asthma, or another condition worse, and recommend working from home, indoor-only duties, or time off until it clears. But a note doesn’t automatically force your employer to excuse you, it depends on your employer’s policy, your state’s laws, and whether your situation qualifies for protected leave. If you’re having real trouble breathing, chest pain, or feel dizzy, don’t wait on a work question, get medical care first.

9. If You Live Somewhere Prone to Wildfires, Prepare Now

If wildfires are common where you live, don’t wait for smoke to show up before you’re ready. A little prep goes a long way for air quality and pregnancy planning:

• Stock a few N95 masks now, before smoke season hits and stores sell out.
• Buy your air filters or purifier ahead of time, prices often spike once smoke arrives.
• Seal up drafty windows and doors before smoky season starts.
• Sign up for local air quality alerts through your phone’s weather app or your city’s emergency notification system, it’s free.
• Know your evacuation zone if you’re near active fire risk, not just smoke, your local fire department or emergency management website usually has a map.
• Keep a small go-bag ready, important documents, medications, your phone charger, so you’re not scrambling if you ever need to leave fast.
• Keep your gas tank at least half full during fire season, just in case.

Preparation now means a lot less stress later, especially with a baby on the way.

Trusting What You Can’t Control

Air quality and pregnancy is one of the genuinely uncontrollable pairings in this season of life. You can’t clear the smoke from the sky. But you can do these small, affordable things to protect yourself and your baby. “Be still, and know that I am God” (Psalm 46:10). Do what you reasonably can today, then let the rest go.

If you’re already thinking about seasonal health, this guide to cold and flu season prep is a good companion to this one. And if stress from days like this is wearing on you, this piece on high cortisol levels might help explain what your body’s feeling.