Published on The Independent on 6th December 2021
Many of us turn to air purifiers during the summer months, as they can help alleviate allergy symptoms by removing pollen from the air in our homes. And given that they produce a cool breeze as they cleanse the air, they can also double up as a fan in hot weather.
In winter, these devices can be equally helpful, especially for those with asthma, as pollution levels are often higher when it’s cold.
This is because in cooler months, we are more likely to experience incidences of temperature inversion – this is basically when a layer of warm air covers the cooler air below like a blanket. When temperature inversion happens, all the pollutants that would normally get blown away by the wind would become trapped until it rains or snows. This in turn reduces air quality both outside and inside our homes.