Delhi Smog Season With a Baby: AQI-by-AQI Guide for Parents (2026)
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Smog Season Is Here. Is Your Baby Breathing Safe?
Every year it's the same. Diwali ends, the sky turns grey, and the AQI app looks like a horror film. If you have a baby at home, the worry doubles. Can I take them out? Is the air inside safe? Do I need a mask for them?
We've put it all in one place. It's simple, practical, and built around the AQI number you see on your phone.
The quick answer: Check the AQI every morning, and plan your baby's day around it. Above 200, keep outings short and skip morning and evening walks. Above 300, stay indoors with windows shut and an air purifier on. Never put a mask on a baby under 2. Keep them indoors instead.
Last updated: October 2026
Why Smog Hits Babies Harder
Babies aren't just small adults. They breathe faster than we do, so they take in more air, and more pollution, for their body size. Their lungs and immune systems are also still developing. UNICEF notes that young children are among the most vulnerable to air pollution for these reasons. (Source: UNICEF)
Smog season isn't a reason to panic. It's a reason to plan.
Your AQI-by-AQI Guide
India uses the National AQI, which has 6 levels. (Source: National AQI, Govt. of India) Here's what each level means for your baby:
| AQI | Level | What to do with your baby |
|---|---|---|
| 0–50 | Good | Go out and enjoy it. Open the windows and air out the house. |
| 51–100 | Satisfactory | Normal outings are fine. Watch babies with a cough or cold. |
| 101–200 | Moderate | Keep outings shorter. Avoid busy roads and traffic. |
| 201–300 | Poor | Only short, necessary trips. Skip park time and walks. Keep windows shut. |
| 301–400 | Very Poor | Stay indoors. Run an air purifier in the room your baby spends most time in. |
| 401–500 | Severe | Stay in. Postpone anything that can wait, even short trips. |
Tip: Check your own area, not just "Delhi". AQI can vary a lot between neighbourhoods. The official SAMEER app from CPCB shows live AQI for your nearest station.
1. Make One Room the "Clean Air Room"
You don't need to purify the whole house. Pick the room where your baby sleeps and plays the most, and focus there.
- Keep the windows and doors shut on Poor days and worse
- Run the air purifier here, with the door closed
- Do naps, feeds and playtime in this room
2. Choosing an Air Purifier
The Indian Academy of Pediatrics (IAP) suggests using a purifier where air quality is poor, and choosing one with a true HEPA filter. (Source: Indian Academy of Pediatrics)
- Filter: True HEPA, not "HEPA-type"
- Size: Check the CADR (clean air delivery rate) against your room size. Higher CADR cleans the room faster.
- Placement: Keep it away from walls and furniture so air can flow
- Maintenance: Clean and change filters on time. A clogged filter does very little.
3. Cut Pollution Inside the House
We focus on the air outside, but a lot of pollution starts at home. The IAP recommends these steps for homes with children: (Source: Indian Academy of Pediatrics)
- No agarbatti, dhoop or mosquito coils in the house, especially in the baby's room
- No smoking anywhere near the baby, including on the balcony
- Damp dusting instead of dry dusting or a jhadu, so dust isn't thrown back into the air
- Mild cleaning products instead of strongly scented ones
- Painting and renovation only when the baby can stay somewhere else
Diwali note: Diwali safai, pooja and crackers all happen in the same weeks as smog season. Keep the baby away from cleaning fumes and cracker smoke, and keep the windows shut on Diwali night.
4. Masks: The Rule for Babies
Under 2 years: no masks. Babies can't take a mask off if they struggle to breathe, and there's a risk of suffocation. Health authorities advise against masks or respirators for children under 2. The safest protection is staying indoors in clean air. (Source: UCSF Pediatric Environmental Health)
For older kids, the IAP suggests a mask when the AQI is above 200. An N95 that fits the child's face well filters best. (Source: Indian Academy of Pediatrics) Use a mask made in a child's size, never an adult one.
5. When You Have to Step Out
- Check the AQI first. If it's lower in the afternoon, go then.
- Keep it short. Do the doctor visit or the errand, then come straight home.
- Avoid traffic. Pollution is highest next to busy roads.
- In the car: keep windows up and the AC on recirculation.
- Back home: wash the baby's hands and face, and change their clothes.
6. Keep Feeds and Fluids Going
Keep your baby's usual feeding routine going. For babies over 6 months, offer water regularly through the day, because indoor heat and dry air add up. If your little one is fussy about water, our guide on getting kids to drink more water has easy tricks.
7. Indoor Days Don't Have to Be Boring Days
Smog season can mean weeks of staying in. Toddlers get restless fast, and screens become the easy way out. Plan a few simple indoor activities in advance:
- Building forts with bedsheets and pillows
- Dance and music time
- Story time with picture books
- Sorting, stacking and matching games
For more ideas, read 8 Screen-Free Activities to Keep Kids Happy and 10 Brainy Activities for Kids.
When to See a Doctor
Call your paediatrician if your baby has:
- Fast breathing, or breathing that looks like hard work
- Wheezing, or a whistling sound while breathing
- A cough that doesn't go away or gets worse at night
- Trouble feeding because of a blocked nose or cough
- Bluish lips or skin. Treat this as an emergency and go to a hospital straight away.
If your baby has asthma or a lung condition, ask your doctor for a smog-season plan before the AQI peaks.
Questions Parents Ask Us
Can I take my newborn out when the AQI is above 300?
It's best not to. At Very Poor and Severe levels, keep your newborn indoors and only go out for things that can't wait, like a doctor's visit.
Can my baby wear an N95 mask?
Not if they're under 2. Masks aren't safe for babies. Keep them indoors in a clean-air room instead.
Is the air inside the house safe?
Outdoor pollution gets inside too. Shut windows, a HEPA air purifier and no agarbatti or smoking indoors make the biggest difference.
Should I stop opening windows completely?
No. Air out the house when the AQI drops to a better level. Check the app first.
Which AQI app should I use?
The official SAMEER app by CPCB shows live readings from monitoring stations near you.
Does a purifier need to run all day?
On Poor days and worse, keep it running in your baby's room, with the door closed, while they're in there.
Can I still do Diwali pooja with my baby?
Yes. Keep the baby away from smoke from diyas, dhoop and crackers, and keep the room well aired once the smoke clears.
You've Got This
You can't control the smog. You can control what your baby breathes at home. Check the number, plan the day, and keep one room clean and calm. That's enough.
Spending more days indoors this season? Explore playful, parent-approved essentials at Nestush.
We get it, mumma.