It depends on barometric pressure rather than height ...
but approximately at 2000 feet the boiling point drops to 208 degrees
at 7000 feet the boiling point is about 199 degrees.
All you have to do to reduce the boiling point of water is go to a higher altitude and boil it.
At high altitude
The boiling point of water changes with altitude. While it boils at 100C at sea level, at the summit of Mount Everest water would boil at a lower temperature of 72C.
At high altitudes, water boils at a lower temperature due to the decrease in atmospheric pressure. To account for this, you may need to boil the water longer or use a pressure cooker to raise the boiling temperature. It's essential to follow specific cooking instructions or use a thermometer to ensure the water reaches a safe temperature for cooking or sterilizing.
Because the air pressure is lower then at sealevel, the boiling temperature of the water is lower. Unless you have a (high) pressure cooker.
The boiling point of water is 100 degrees Celsius or 212 degrees Fahrenheit. However, water boils at a lower temperature at higher altitude. Salt water boils at a higher temperature than pure water.
Water boils at 100°C at normal atmospheric pressure. However, if the pressure decreases, as in high altitudes, the boiling point of water decreases as well. This is why water may boil at a temperature lower than 100°C in high-altitude areas.
A high altitude coffee maker is a special type of coffee maker that is used for areas that are at higher altitudes. What makes it different than standard coffee makers is that it boils water at a lower temperature due to the altitude.
At high altitudes, the air pressure is lower, which causes water to boil at a lower temperature. This is because the lower pressure reduces the amount of energy needed for water molecules to escape into vapor form, making it boil at a lower temperature than at sea level.
At this altitude (2150-2200 ft) water will boil at about 97.8 oC . It also depends on the weather (high/low pressure).This is calculated according to 'Water Altitude Boiling Point Calculator' (Cf. 'Related links' just below this answer. Select on opened site page the 2nd button 'What is the local altitude' in ft. or m.).
To know the reason behind it remember one thing that with increasing altitude the temperature decreases eg. in may month there will be high temperature in mumbai that is at low altitude and comparatively low temperature in himalayan region (eg. srinagar) that is at high altitude.Now as we know that high temperature increases the rate of evaporation and if the rate of evaporation is increased through leaves then more water will go into atmosphere and humidity will increase and this gives us our answer that is...............at high altitude because of low temperature the evaporation rate decreases and thus there are less water vapour in atmosphere as compared to low altitude areas where there is high temperature and high vapour rate in air due to evaporation
As you go up, air pressure becomes less, and water boils at a lower temperature. Due to the very high altitude of Mt. Everest, water would boil at 160F (instead of 212 degrees F at sea level)