Keep in mind 30-50% relative humidity is comfortable. Right now in new york city it's 30°F, 87% relative humidity, and a barometric pressure of 29.45 in. Usi

Keep in mind 30-50% relative humidity is comfortable. Right now in new york city it's 30°F, 87% relative humidity, and a barometric pressure of 29.45 in. Using this calculator: https://www.rotronic.com/en-us/humidity_measurement-feuchtemessung-mesure_de_l_humidite/humidity-calculator-feuchterechner-mr https://www.rotronic.com/en-us/humidity_measurement-feuchtem... We can calculate the specific humidity of NYC, that's around 21.42gr/lb right now. That's the mass of water vapour in the air. However, most people don't keep their houses at 30°F! You heat up the air in your house to room temperature. So if a New York City resident heat up air that has a specific humidity of 21.42gr/lb to 70°F, they end up with a relative humidity of 19.57% inside their house. This feels very dry! In fact, it's dryer than the Sahara Desert (approximately 25% relative humidity on average).