Your child spends 90% of their time indoors. Is the air in your house actually clean?
Air pollution is affecting far more children than many parents realize.
According to the American Lung Association’s 2026 “State of the Air” report, 46% of children in the United States live in areas with unhealthy air quality. And the problem is not limited to outdoor pollution. The EPA says indoor air pollutants can sometimes reach concentrations equal to — or higher than — outdoor levels.
That matters because children spend most of their time inside. The American Academy of Pediatrics estimates kids spend roughly 80% to 90% of their time indoors.
Why are children more sensitive to indoor air pollutants?
Kids are still growing, which makes their bodies more vulnerable to pollution exposure.
Children breathe faster than adults and inhale more air relative to their body size. Their lungs, brains and immune systems are also still developing, making them more susceptible to damage from unhealthy air quality.
“Polluted air can block small airways, interfere with lung growth, and disrupt normal brain development. Over time, these injuries can limit a child’s ability to learn, play and thrive,” the American Lung Association warns.
Children with asthma face especially high risks. Nearly 2.4 million children with asthma live in counties that received an “F” grade for at least one major pollutant, according to the ALA.
What are the biggest indoor air pollutants in most homes?
Some of the most common indoor air pollutants come from everyday household activities. Major sources include:
- Cigarette and vape smoke
- Gas stoves and fireplaces
- Dust and pet dander
- Mold and excess moisture
- Aerosol sprays and scented products
- Cooking smoke and grease particles
- Vehicle exhaust from attached garages
- Radon and carbon monoxide
Because many of these pollutants are invisible, families may not realize they are building up indoors.
How to improve indoor air quality if someone smokes or vapes
Creating a smoke-free home is one of the most important indoor air quality solutions for families. Experts recommend:
- Never smoking or vaping inside the home, garage or car
- Avoiding smoking near doors and windows where smoke can drift back indoors
- Washing clothing exposed to smoke before holding young children
- Quitting smoking entirely if possible
Resources for quitting are available through Smokefree.gov.
Parents can also reduce indoor air pollution by limiting combustion indoors. Gas stoves, fireplaces and wood-burning appliances release pollutants directly into the air.
According to the Pediatric Environmental Health Specialty Units (PEHSU), “switching from indoor appliances that run on electricity, instead of using gas, may reduce indoor air pollution up to 50%.”
What are the best indoor air quality solutions for cleaner air at home?
Filtration and ventilation are two of the biggest factors in cleaner indoor air. Parents can improve indoor air quality by:
- Installing HVAC filters rated MERV 13 or higher
- Replacing filters every one to three months
- Using portable HEPA air purifiers in bedrooms and living spaces
- Running exhaust fans while cooking and showering
- Opening windows for short periods when outdoor air quality is safe
Before opening windows, families should check the Air Quality Index through AirNow. Windows should stay closed during wildfire smoke events, poor air quality days or high-pollen periods.
MORE INFO: How to choose the best HEPA air purifier for your home — and why it’s so important
Cooking is another overlooked source of pollution indoors. Running the range hood on high and using back burners can help capture smoke and airborne particles more effectively.
How to reduce indoor air pollution from dust and chemicals
Many everyday cleaning habits accidentally send dust back into the air. To reduce airborne particles:
- Vacuum regularly with a HEPA-filter vacuum
- Use damp microfiber cloths instead of dry dusters
- Mop hard floors with a damp mop
- Avoid sweeping dust into the air
- Clean while children are away from the room
Parents may also want to cut back on heavily scented household products. Experts often recommend:
- Avoiding aerosol sprays and air fresheners
- Choosing fragrance-free laundry detergents
- Using pump sprays instead of aerosols
- Washing bedding weekly in hot water to reduce dust mites
Reducing carpet and thick curtains in children’s rooms can also help limit allergen buildup.
What humidity level is healthiest indoors?
The Asthma and Allergy Foundation of America (AAFA) recommends keeping indoor humidity between 30% and 50%.
To help maintain healthy humidity:
- Use a hygrometer to monitor moisture levels
- Run a dehumidifier in damp areas
- Use a humidifier during dry winter months if needed
- Repair leaks quickly
- Improve ventilation in bathrooms and basements
Too much moisture can encourage mold growth and dust mites, while very dry air may irritate the nose, throat and lungs.
Should parents worry about radon and carbon monoxide?
Yes — both can be dangerous because they are impossible to see or smell. Parents should:
- Install smoke and carbon monoxide detectors on every floor
- Test detectors regularly
- Replace batteries once a year
- Test for radon, especially in lower-level homes or apartments
According to the EPA, radon is the second leading cause of lung cancer in the United States.
Low-cost radon test kits are available through the American Lung Association or by calling 1-800-SOS-RADON.
Families in homes built before 1978 should also consider lead testing and discuss blood lead screening with their child’s doctor.
What’s the easiest way for parents to start improving indoor air quality?
The best approach is to focus on small, manageable changes.
Replacing an old air filter, adding a HEPA purifier, switching cleaning products or improving ventilation during cooking can all reduce indoor air pollutants over time.
Parents do not have to overhaul their home overnight. One small improvement each week can gradually create a cleaner, healthier indoor environment for children.
This article was created by content specialists using various tools, including AI.
