Diwali 2026: You can't control outdoor air pollution, but 6 things you can do to improve indoor air quality during Diwali firecracker season without an air purifier

Diwali celebrations often coincide with a rise in air pollution due to firecrackers, smoke and dust. While you cannot control the quality of outdoor air, you can take simple steps to reduce indoor pollution and make your home environment cleaner.

1. Keep windows and doors closed during peak pollution hours

During Diwali, firecracker smoke and outdoor pollutants can enter your home through open windows and doors. Keep them closed when pollution levels are high, particularly during and immediately after firecracker activity.

2. Avoid burning incense sticks and scented candles

Incense sticks, dhoop, scented candles and mosquito coils release smoke and particulate matter into indoor spaces. Although these products are commonly used during festive celebrations, frequent burning can add to indoor pollution. Limit their use, especially when outdoor air quality is already poor, and avoid burning multiple products in enclosed rooms.

3. Use exhaust fans while cooking

Cooking, particularly frying and deep-frying festive snacks, can release smoke, grease and fine particles into the air. Switch on your kitchen exhaust fan or chimney while preparing food. Ensure that it vents outdoors and clean its filters regularly. This helps remove cooking-related pollutants instead of allowing them to spread throughout the house.

4. Clean air-conditioner filters regularly

Air-conditioner filters can accumulate dust, dirt and other particles over time. If they are not cleaned regularly, they may circulate dust within the room. Check the manufacturer's instructions and clean or replace filters as recommended. Also, ensure that your AC's outdoor-air intake, if any, is not drawing polluted air inside.

5. Avoid smoking and burning materials indoors

Avoid smoking, burning camphor excessively or lighting materials that produce smoke inside enclosed spaces. These activities can release fine particles and harmful gases, adding to indoor pollution. During Diwali, also avoid burning leftover firecrackers or waste inside or near the house to maintain a cleaner indoor environment.

6. Reduce dust accumulation with regular cleaning

Curtains, carpets, sofa covers, cushions and bedding can collect dust and other particles. Wash removable fabric covers regularly and clean furniture using a damp microfibre cloth. Avoid shaking dusty rugs or curtains indoors, as this can release accumulated particles back into the air.

Can indoor plants improve air quality during Diwali?

Indoor plants such as snake plants, money plants and areca palms can make your home look greener and more inviting. However, they cannot significantly remove particulate pollution or replace proper ventilation and filtration. Avoid relying on plants as a solution to firecracker smoke or poor indoor air quality.