2012 Honda Civic blows out hot air?

So I have this problem when I driving and the air conditioning is not on I feel heat coming out of the vents. I usually notice this when the windows are down but i usually keep the temperature knob on cold. The car has 50 thousand miles. Any way to make this stop? Its quite annoying when its already 100 degrees outside lol
Added (1). The fan is turned off as well

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