Ever glance at the weather app and see a number like 85 or 150 and wonder what it really tells you? That’s the Air Quality Index (AQI), a simple rating that shows how clean or polluted the air is right now. The higher the number, the more likely you’ll feel a cough, sore throat, or trouble breathing. Knowing the AQI helps you decide if it’s a good day for a jog, a bike ride, or just opening the windows.
Most smartphones have built‑in weather widgets that include AQI data. You can also download free apps like AirVisual, BreezoMeter, or use government sites such as the Central Pollution Control Board for Indian cities. These tools show real‑time numbers, a colour code (green to red), and short health advice – for example, "Sensitive groups should limit outdoor activity" when the AQI hits 150.
If you spend a lot of time indoors, don’t rely only on outdoor readings. Indoor air can be dirty too, especially in kitchens, bathrooms, or rooms with pets. A cheap indoor air‑quality monitor will give you readings for PM2.5, CO₂, and humidity. Place it in a room where you breathe most often, like the living room or bedroom, and you’ll spot problems before they affect you.
First, control sources. Turn off the stove’s flame when you’re not cooking, use an exhaust fan, and keep windows closed on high‑pollution days. If you have a wood‑burning stove or heater, choose dry, seasoned wood and keep the chimney clean. For smokers, stepping outside is the easiest fix – secondhand smoke spikes indoor AQI in minutes.
Second, bring in clean air. Air purifiers with HEPA filters can cut out particles as small as 0.3 microns, which includes most dust, pollen, and smoke. Look for a model that covers the size of your room; the CADR (Clean Air Delivery Rate) number tells you how fast it works. If a purifier isn’t an option, a simple trick is to place a bowl of water with a few drops of essential oil near a fan; the moving air helps settle dust.
Third, add plants wisely. Some houseplants, like snake plant and spider plant, absorb CO₂ at night and release oxygen. However, they don’t dramatically lower PM2.5, so treat them as a bonus rather than a primary solution.
Lastly, stay active wisely. On days with low AQI (good air), feel free to jog outdoors. When the AQI rises, shift workouts indoors, use a treadmill, or do yoga at home. Hydrating well also helps your lungs clear irritants faster.
Keeping tabs on air quality isn’t a one‑time thing. Make it a habit to check the AQI each morning, set alerts on your phone for spikes, and adjust your routine accordingly. Over time, these small steps add up – you’ll breathe easier, sleep better, and reduce the long‑term risk of respiratory problems.
Remember, good air isn’t a luxury; it’s a daily choice. Use the tools, follow the tips, and enjoy cleaner, healthier breaths wherever you live.
Delhi-NCR enjoyed its cleanest July in over 11 years, with AQI regularly below 50 thanks to heavy rains. The city logged 118 clean air days in 2025, beating previous records, but the downpour also brought major waterlogging and traffic chaos. Cloud-seeding is planned for the months ahead to keep pollution down.