Asked by: Angus Egoscue
asked in category: General Last Updated: 24th March, 2020

Why can you see your breath when it's not cold?

When you exhale when it's cold outside, the water vapor in your breath condenses into lots of tiny droplets of liquid water and ice (solid water) that you can see in the air as a cloud, similar to fog. There's no exact temperature at which condensation will occur.

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Correspondingly, why can you see your breath when it's warm?

When it's warm out, though, the invisible water vapor gas stays invisible, because the warm air provides energy that allows the water vapor to remain a gas. As temperatures drop, it's more likely that you'll be able to see your breath. There's no exact temperature at which condensation will occur.

Additionally, can you see your breath at 50 degrees? You can even see your breath at 60 degrees, but this is uncommon, as the outside air would have to be at 80% relative humidity or higher to start with which is pretty muggy. If the air temperature is cold enough though, you are guaranteed to see your breath.

Similarly, it is asked, why do you see your breath on a cold day?

When you exhale on a cold day, the 'breath cloud' that subsequently appears is actually water vapor condensed into small droplets of liquid water and ice. This cloud is invisible on hot days, as the warm air supplies adequate energy to the water vapor to keep it in a gaseous state.

Why we can see your breath in winter but not in summer?

At dew point, air can no longer hold water vapor; when air is cooled beyond dew point water vapor turns to liquid form, the physical process known as condensation. It is this liquid form of your breath – minuscule droplets of water – that creates the fleeting, misty cloud we see when breathing in cold weather.

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