Close-up of the dial of a barometer

Does rain, cold or heat affect humidity?

It is surprising how much the humidity level can be affected by the weather. In rainy weather, the relative humidity rises to almost 100 % due to evaporation. The air does not necessarily become saturated with water vapour, but the absolute humidity level increases locally due to rain.

When the air is warmer, water suspended in the air evaporates more quickly, creating a higher humidity level. If the air is cooler, the relative humidity can drop below 5 % and make it feel cooler than the outside temperature.

The ideal humidity level is between 40 and 60 %

Below 40 %The air becomes too dry. This irritates your respiratory system and dries out your nasal mucosa. Heat, the use of an air conditioner or lack of ventilation in your home can be responsible for this low humidity.

Above 60 %If the air is too humid, it can cause allergies and asthma. In addition to health problems, too much humidity leads to the proliferation of dust mites and the development of mould in your home.

Depending on your situation or the weather (heat wave, rain, etc.), you can opt for a humidifier or a dehumidifier. There are many models of humidifiers on the market: ultrasonic, evaporative, hot or warm steam. There are also dehumidifiers, of which there are 3 types: compression or condensation, desiccant or (chemical) moisture absorbers.

As true air quality enthusiasts, our site will help you choose the right device for your needs, whether the air is humid, dry, poor quality, hot or cold.