Check the AQI before you exercise outside. On most days, keep walking and moving: the benefits of activity usually outweigh the harm from polluted air. On very polluted days, don’t skip your workout; move it indoors and keep it moderate. October to January is smog season in much of north India, and that is exactly when many women stop exercising. This guide helps you keep going safely.
Why polluted air matters
WHO estimates that outdoor air pollution caused 4.2 million early deaths worldwide in 2019, and that in 2019 99% of the world’s population lived in places where WHO’s air quality guidelines were not met. Fine particles (PM2.5) are the main concern: they are linked to heart disease, stroke, lung disease and lung cancer. During exercise you breathe faster and more deeply, so you take in more of whatever is in the air.
So should you stop exercising outdoors?
Usually not. A 2016 study in Preventive Medicine weighed the health benefits of walking and cycling against the harm from breathing PM2.5. At the average city level worldwide (22 µg/m³), the benefits of activity far outweighed the risks, even at extreme amounts of activity. Even at a high level of 100 µg/m³, the harm only exceeded the benefit after about 1½ hours of cycling a day or more than 10 hours of walking a day.
These were long-term averages from a model, not advice for a single smoggy day. On days when the air is far worse than that, and for anyone with a heart or lung condition, the sensible move is to bring the workout indoors and keep it moderate.
Check the AQI: India’s six bands
India’s National Air Quality Index (AQI) combines eight pollutants, including PM2.5 and PM10, and reports the worst one. You can find your city’s AQI on the Central Pollution Control Board’s daily reports or the weather app on your phone. The bands are official; the workout suggestions are ours.
| AQI | Band | Our workout suggestion |
|---|---|---|
| 0–50 | Good | Exercise outdoors as usual. |
| 51–100 | Satisfactory | Outdoors is fine for most women. If you have asthma, watch for symptoms. |
| 101–200 | Moderate | Walks are fine for most; avoid long, hard sessions near traffic. With asthma, a heart or lung condition, or in pregnancy, consider indoors. |
| 201–300 | Poor | Move your workout indoors. Keep outdoor walks short and easy. |
| 301–400 | Very poor | Indoors only, at a moderate pace. |
| 401–500 | Severe | Indoors only, gentle to moderate. Rest if you feel unwell. |
A 20-minute indoor workout for smoggy days
No equipment beyond a chair and two filled water bottles:
- Warm up, 3 minutes: march on the spot, shoulder rolls and arm circles.
- Dance cardio, 8 minutes: two or three songs you love, using the moves from our 30-minute dance workout. Keep it at a pace where you can talk but not sing.
- Chair strength, 6 minutes: chair squats, chair push-ups, supported reverse lunges and seated twists with a bottle, 40 seconds each with 20 seconds’ rest, then repeat the first two. Our chair workout has more moves.
- Cool down, 3 minutes: slow stretches for the legs, chest and back.
Got stairs in your building? Climbing a few floors at an easy pace is good cardio. Longer on some days? Add our upper body or lower body routine.
Smart habits for the smog season
- Check before you go: air quality changes through the day, so look at the current AQI rather than going by the clock.
- Walk away from traffic where you can: a park or an inner lane rather than a main road.
- Keep it moderate outdoors on hazy days: brisk walking rather than running or hard intervals.
- Plan your week in advance: keep two or three indoor sessions ready so a bad-air day doesn’t become a week off.
- Count everything: WHO’s 150 to 300 minutes a week can come from indoor dance, stairs and housework done briskly.
Walking is your main exercise? Our walking for weight loss guide has indoor options for bad-air days too. And if the festive season is adding to it, see our Diwali and festive season guide.
Who should be extra careful
- Women with asthma or another lung condition: keep your inhaler with you and follow your asthma plan.
- Women with a heart condition, high blood pressure or diabetes.
- Pregnant women, and older women.
Ask your doctor what to do on high-pollution days. Stop exercising if you feel chest tightness, wheezing, unusual breathlessness, dizziness or chest pain, and call 112 for chest pain, severe breathlessness or fainting.
How FunDa helps
Superwoman Club classes are live, women-only and done at home on Zoom, with dance cardio and strength work using a chair, a dupatta and water bottles. Smog, rain or summer heat never have to stop your routine. Results vary from person to person.
Sources
- Press Information Bureau, Government of India. India’s path to blue skies: from awareness to action for cleaner air (7 September 2026).
- World Health Organization. Ambient (outdoor) air pollution (fact sheet, 24 October 2024).
- Tainio M et al. Can air pollution negate the health benefits of cycling and walking? Prev Med. 2016;87:233-236.
- Bull FC et al. World Health Organization 2020 guidelines on physical activity and sedentary behaviour. Br J Sports Med. 2020.
How we write our guides: read our editorial and evidence policy.