dewpoint
Condensation temperature marker
Dewpoint is the temperature at which air becomes saturated and water vapor begins to condense into liquid droplets.
When air cools to its dewpoint, dew forms on surfaces, fog may appear, or clouds develop.
Meteorologists use dewpoint to measure humidity—a high dewpoint means muggy conditions: The dewpoint hit 75°F, making it feel oppressive outside.
Low-lying cloud cover
- mistFine airborne moisture
- frostThin ice coating
- moistureSmall amounts of liquid
- dropletsMinute liquid globules
vapor · water cycle · saturation · supersaturation · cloud formation · precipitation · humidity · fogging
Measures air's moisture level
- sling psychrometerRotating wet-dry bulb thermometer pair
- wet-bulbHumidity-adjusted temperature measurement
- vapor pressureEquilibrium gas-phase partial force
- humidity sensorInstrument measuring air moisture
Artificial water supply for agriculture
- frost warningPredicted below-freezing temperatures announcement
- fungal growthOrganism spreading via spores
- greenhouseClimate-controlled plant enclosure
- transpirationBotanical water vapor release
Range of clear sight
- fog advisoryWeather notice for poor visibility
- icingSweet cake covering
- flight planningPre-departure navigation work
- ceilingRoom's upper surface
Managing air's water content
- dehumidifierDevice reducing air moisture
- humidifierMoisture-adding appliance
- air conditioningIndoor cooling system
- ventilationCirculation of fresh air
comfort zone · indoor climate · mold prevention · insulation · ductwork · climate control
fog
Low-lying cloud cover
droplets · vapor · water cycle · saturation · supersaturation · cloud formation · precipitation · humidity · fogging · beading
hygrometer
Measures air's moisture level
- sling psychrometerRotating wet-dry bulb thermometer pair
- wet-bulbHumidity-adjusted temperature measurement
- vapor pressureEquilibrium gas-phase partial force
irrigation
Artificial water supply for agriculture
- frost warningPredicted below-freezing temperatures announcement
- fungal growthOrganism spreading via spores
- greenhouseClimate-controlled plant enclosure
visibility
Range of clear sight
- fog advisoryWeather notice for poor visibility
- icingSweet cake covering
- flight planningPre-departure navigation work
humidity control
Managing air's water content
- dehumidifierDevice reducing air moisture
- humidifierMoisture-adding appliance
- air conditioningIndoor cooling system
ventilation · comfort zone · indoor climate · mold prevention · insulation · ductwork · climate control
- meteorologyweather, rain, wind, snow, clouds
- weather datatemperature, humidity, rainfall, snowfall, wind speed
- condensationcondensation, fog, steam, frost, water droplets
- humidityrelative humidity, humidity sensor, humidity reading, humidity control, humid
- building healthsick building, mold exposure, radon, asbestos, carbon monoxide
- HVACair conditioner, furnaces, furnace, ductwork, central air