Why many experts advise against sleeping with window open

A good night’s sleep often determines the tone for the day ahead, but many people wonder whether it’s better to sleep with the  window open or closed.

Truth is, there are no clear scientific findings that prove whether one option is better that the other, but sleep experts do agree that the choice largely depends on personal comfort and environmental factors like air quality, outdoor temperature, noise, brightness, and safety.

Some people prefer to sleep with their windows open because of the cool air and the refreshment it brings. However, this habit also comes with certain risks such as increased exposure to allergens, dust, pollution, and outside noise, as well as potential security concerns.

Much like how lighting or wall color can influence the quality of your rest, the decision to keep your window open or closed can subtly affect how well you sleep.

Risks to health and sleep quality

While sleeping with an open window may feel refreshing, it actually exposes you to temperature changes that can affect the quality of your sleep. When the body is forced to react to sudden changes, including cool drafts and warm breezes, it may fail to maintain balance.

Outside noises, such as those of cars, people talking, or dogs barking can disturb your sleep and make you feel groggy in the morning. For many, the idea of sleeping with the window open also feels uncomfortable, creating a sense of insecurity.

Leaving the window open can also invite insects inside. Mosquitoes, flies, spiders, and other small creatures can easily find their way in, leading to itchy bites or sleepless nights. In some areas, insect bites can even carry health risks. While window screens can reduce the problem, they don’t always provide complete protection.

Simple alternatives for better sleep

Even if you choose not to have your window open during the night because of the reasons mentioned above, you can still achieve a pleasant sleeping temperature with certain alternative methods. For one, having an air purifier can also help create a comfortable sleeping environment by maintaining a steady temperature, filtering out dust and allergens, and producing a soft background hum that masks unpredictable outdoor sounds.

Also, you can always open the windows first thing in the morning ad let the air room out while allowing fresh air to get in.