Every November it’s the same story. You wake up, the sky looks like someone left a grey filter on it, your throat feels scratchy, and the AQI app on your phone has turned an angry shade of red. If you live in Delhi-NCR, Gurugram, Lucknow, Kolkata or even Chennai on a bad day, you already know the drill.
The good news? You can’t fix the city’s air on your own, but you can cut down how much of it your family actually breathes. Below are the top 10 ways to protect your family from air pollution this winter, ranked by how much difference they make. The most useful ones come first, so even if you only read the next two minutes, you’ll know what to do today.
Quick Answer: The Top 10 at a Glance
- Check the AQI every morning and plan your day around it.
- Wear a well-fitted N95 or N99 mask outdoors, not a cloth or surgical mask.
- Create one clean room at home with a true HEPA air purifier.
- Keep windows shut during the worst hours and air out the house smartly.
- Move workouts indoors on poor, very poor and severe days.
- Stop making smoke inside: no incense, mosquito coils or cigarettes, and use the kitchen chimney.
- Protect kids, elders and patients first, because they get hit hardest.
- Use recirculation mode in the car and change the cabin filter.
- Clean with a damp cloth, not a dry broom or duster.
- Look after your body and know the warning signs that need a doctor.
First, What Your AQI Number Actually Means
India’s Air Quality Index, run by the Central Pollution Control Board (CPCB), goes from 0 to 500. Here’s a simple way to read it:
| AQI | Category | What it means for your family |
|---|---|---|
| 0–50 | Good | Go out, open the windows, enjoy it. |
| 51–100 | Satisfactory | Fine for most people. Very sensitive people may notice minor discomfort. |
| 101–200 | Moderate | People with asthma, lung or heart problems may feel it. |
| 201–300 | Poor | Breathing discomfort for many people with long exposure. |
| 301–400 | Very Poor | Can cause breathing illness with prolonged exposure. Cut outdoor time. |
| 401–500 | Severe | Affects even healthy people. Serious risk for heart and lung patients. |
Rule of thumb: once the AQI crosses 200, start using the steps below. Once it crosses 300, use all of them.
1. Check the AQI Every Morning (and Plan Around It)
This sounds too simple to be number one, but everything else depends on it. You can’t protect yourself from something you aren’t measuring. Make checking the AQI as normal as checking the weather.
The CPCB’s official SAMEER app shows readings from government monitoring stations, and most weather apps now show AQI too. Look at the station closest to your home, not just the city average, because pollution can be very different from one neighbourhood to the next.
Then use it. If the morning reading is very poor, that’s the day to skip the park walk, drop the kids by car instead of making them wait at the bus stop, and keep the windows closed.
2. Wear a Well-Fitted N95 or N99 Mask Outdoors
The dangerous part of winter smog is PM2.5: tiny particles small enough to go deep into your lungs. A cloth mask, a hanky, a dupatta or a loose surgical mask does very little against them. A properly fitted N95 or N99 respirator is what actually filters them out.
The word that matters most there is fitted. A mask with gaps around the nose or cheeks lets polluted air rush straight past the filter. When you put it on:
- Press the metal nose clip firmly so it hugs your nose.
- Breathe out sharply. If you feel air leaking at the edges, adjust it.
- Beards make a tight seal hard, so expect less protection if you have one.
- Replace it when it gets dirty, damp, damaged or hard to breathe through.
Important: don’t put masks on babies under two years old. People with heart or lung disease should check with their doctor before wearing a tight respirator for long periods.
3. Create One Clean Room With a HEPA Air Purifier
You probably can’t afford a purifier in every room, and you don’t need one. Pick the room where your family sleeps or spends the most time, usually the bedroom, and turn it into your clean room. You spend about a third of your life sleeping, so clean air there pays off every single night.
What to look for when buying:
- True HEPA filter, not “HEPA-type” or “HEPA-like”.
- CADR (Clean Air Delivery Rate) that matches your room size. A small purifier in a big hall won’t keep up.
- No ozone. Skip purifiers that generate ozone, because ozone itself irritates the lungs.
Then use it properly. Keep the door and windows shut while it runs, don’t push it against a wall or behind furniture, and change or clean the filter on schedule. A clogged filter quietly stops doing its job.
4. Keep Windows Shut During the Worst Hours
On a very poor day, opening every window “for fresh air” just lets the smog in. In winter, pollution often builds up overnight and in the early morning, when cold, still air traps it close to the ground.
That doesn’t mean sealing your home for three months. Homes still need some ventilation, especially if you cook with gas. The smart move is to air out the house when your local AQI is at its lowest for the day, often in the afternoon when the sun has warmed things up. Check your app first, open up for a short while, then close again.
Small fix, big help: use rubber strips or draught stoppers on gappy windows and doors in your clean room so outside air doesn’t leak in around the purifier.
5. Move Your Workouts Indoors on Bad Days
When you exercise, you breathe faster and deeper, often through your mouth. That means you pull in far more polluted air than when you’re sitting still. A morning jog in severe smog can do your lungs more harm than good.
Don’t stop exercising, just move it. On poor, very poor and severe days, try:
- Yoga, stretching or bodyweight workouts at home in your clean room
- An indoor gym, badminton court or swimming pool
- Walking laps in a mall or indoor complex
Save the outdoor runs for days when the AQI drops back to satisfactory or moderate.
6. Stop Making Smoke Inside Your Own Home
Here’s the uncomfortable truth: a lot of indoor pollution is homemade. You close all the windows to keep the smog out, then light agarbatti, a mosquito coil and a few candles. All of that smoke now has nowhere to go.
- Skip incense, dhoop and mosquito coils on bad AQI days. Use a mosquito net or plug-in repellent instead.
- No smoking indoors. Ever, but especially now.
- Switch on the kitchen chimney or exhaust fan every time you cook, particularly when frying or using a tawa on high heat.
- Never burn leaves, garbage or wood for warmth near the house.
7. Protect Kids, Elders and Patients First
Pollution doesn’t hit everyone equally. Children breathe faster and their lungs are still growing. Older people, pregnant women, and anyone with asthma, COPD, heart disease or diabetes are also at higher risk.
- Give them the clean room to sleep in.
- Keep their outdoor time short on bad days, especially early morning.
- Make sure inhalers and regular medicines are stocked, and that everyone knows where they are.
- If an asthma or heart patient’s symptoms are getting worse, talk to their doctor early. Don’t wait for an emergency.
8. Use Recirculation Mode in the Car
Sitting in traffic means sitting in a cloud of exhaust. With the windows down or the AC on fresh-air mode, all of that comes straight into the cabin.
Keep the windows up and switch the AC to recirculation mode (the button with the curved arrow inside a car) in heavy traffic. Ask your service centre about a cabin filter rated for fine particles, and replace it on time. Many people haven’t changed theirs in years.
On a two-wheeler there’s no cabin to hide in, so a fitted N95 under your helmet matters even more.
9. Clean With a Damp Cloth, Not a Dry Broom
Fine dust from outside settles on your floors, sofas and shelves. A dry jhaadu or feather duster just throws it back into the air you’re breathing.
Switch to wet mopping and damp-cloth dusting during the smog season. If you use a vacuum cleaner, one with a HEPA filter traps the fine dust instead of blowing it back out. Wash curtains and bedsheets a little more often too, because they catch a lot of what drifts in.
10. Look After Your Body and Know the Warning Signs
No food or kadha can “clean” your lungs, whatever WhatsApp says. But a healthy routine helps your body cope with a rough season: drink enough water, eat plenty of fruits and vegetables, sleep well, and keep up with any medicines you already take.
See a doctor quickly if anyone in the family has:
- Breathlessness or wheezing that’s new or getting worse
- Chest pain or tightness
- A cough that won’t go away
- Dizziness, unusual tiredness or a racing heartbeat
3 Air Pollution Myths to Stop Believing
“Indoor plants will clean the air.” Plants are lovely, but you’d need a jungle’s worth in one room to make a real dent in PM2.5. Keep them for the vibe, not as your purifier.
“Any mask is better than nothing.” A loose cloth mask may stop big dust, but not the fine particles that do the real damage. A fitted N95 is the one that counts.
“If I stay indoors, I’m safe.” Outdoor air leaks in through gaps, and indoor smoke adds to it. Staying in only works if you also follow steps 3, 4 and 6.
Our Take
If you only do three things this winter, make them these: check the AQI daily, keep a fitted N95 by the door, and set up one clean room where your family sleeps. They aren’t glamorous, but together they cut a big share of the smog your family breathes. The rest of the list helps you squeeze out even more.
FAQs
Which mask is best for air pollution in India?
A well-fitted N95 or N99 respirator. Cloth, paper and loose surgical masks don’t filter the fine PM2.5 particles in winter smog well.
At what AQI should I stop going outside?
Start cutting outdoor time once the AQI crosses 200 (poor). Above 300 (very poor), avoid outdoor exercise and keep trips short. At 400+ (severe), stay in as much as you can, especially children, elders and patients.
Do air purifiers really work?
Yes, a true HEPA purifier with a CADR suited to the room works well in a closed room. It won’t help much if the windows are open or the room is too big for it.
When is the air worst in winter?
Pollution often builds up overnight and in the early morning, when cold, still air traps it near the ground. Check your local AQI, as it changes from day to day and place to place.
Can children wear N95 masks?
Older children can wear child-sized N95 masks that fit properly. Never put a mask on a baby under two. Keep young kids indoors in a clean room on bad days instead.
This article is general information, not medical advice. If you or a family member has a heart or lung condition, follow your doctor’s guidance. AQI categories are from the Central Pollution Control Board (CPCB). Check live readings on the CPCB AQI portal.
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