Air quality in winter

Seasons and the weather conditions that accompany them have a huge impact on the level of air pollution. How does the quality of the air we breathe change during the winter months?

Polluted air in winter

Cold air is denser and moves slower than warm air. This density means that cold air traps and holds pollutants, making them last much longer than in the summer. Additionally, cold air tends to be drier because it can’t hold as much moisture as warm air. Unfortunately, cold, dry air contains more pollutants, making it harder to breathe than in the summer, when the air is more mobile. These atmospheric factors mean that major cities struggle with persistent smog all winter long. However, it is not only the weather that contributes to the reduced air quality in the winter months. As winter approaches, our habits change, which often result in increased production of pollutants. These include:

• leaving cars running to warm them up
• heating season - coal burning
• burning in the fireplace
• increased energy demand in large factories and companies

Winter and indoor air quality

It is no wonder that we spend more time indoors in winter. The days are much shorter than in summer, and snow or frost do not encourage long walks. Airtight houses help retain heat, but they also impede air circulation, which exposes us to staying in closed rooms, where more and more pollutants accumulate. Wood crackling in the fireplace or burning candles certainly create a pleasant, cozy atmosphere in the apartment, but let's not forget to air it thoroughly. Substances released from candles or burning wood are harmful to health. So how do you improve the air quality in your home when winter comes? Remember to air your home regularly - it's worth checking the smog report in advance, so as not to let additional pollutants into your home. Air purifiers and humidifiers are very useful devices - they will help maintain the right humidity in heated rooms and remove accumulated pollutants. Of course, checking the ventilation system in your home is also a basic activity.