dew point
Moisture saturation temperature
The dew point is the temperature at which air becomes saturated with water vapor and condensation begins to form.
When air cools to its dew point, moisture appears as dew, fog, or frost.
A high dew point means humid, muggy conditions; a low dew point means dry air.
The dew point dropped overnight, leaving frost on the windshield.
Measures air's moisture level
- sling psychrometerRotating wet-dry bulb thermometer pair
- wet-bulb temperatureEvaporative cooling's lowest achievable reading
- vapor pressureEquilibrium gas-phase partial force
- relative humidityAir's moisture versus capacity
Small amounts of liquid
- dropletsMinute liquid globules
- dewdropCondensed moisture on surfaces
- dewfallMoisture forming at night
- fogLow-lying cloud cover
mist · frost · hoarfrost · beads · dampness · wetness · water vapor · condense
Moisture in atmosphere
- tropicalOf hot, humid regions
- aridDevoid of water
- muggyUnpleasantly warm and humid
- sultryHot, humid, or alluring
oppressive · heat index · sweltering · clammy · sticky · humid climate · desert climate · monsoon
Sweet cake covering
- visibilityRange of clear sight
- ceilingRoom's upper surface
- cloud baseBottom of cloud layer
- contrailsAircraft exhaust condensation
Device reducing air moisture
- humidifierMoisture-adding appliance
- air conditioningIndoor cooling system
- ventilationCirculation of fresh air
- ductworkHVAC distribution channels
refrigeration · climate control · comfort zone · indoor air quality · evaporator · chiller · thermostat · humidistat
hygrometer
Measures air's moisture level
- sling psychrometerRotating wet-dry bulb thermometer pair
- wet-bulb temperatureEvaporative cooling's lowest achievable reading
- vapor pressureEquilibrium gas-phase partial force
moisture
Small amounts of liquid
fog · mist · frost · hoarfrost · beads · dampness · wetness · water vapor · condense · fogging
humidity
Moisture in atmosphere
sultry · oppressive · heat index · sweltering · clammy · sticky · humid climate · desert climate · monsoon · maritime
icing
Sweet cake covering
- visibilityRange of clear sight
- ceilingRoom's upper surface
- cloud baseBottom of cloud layer
dehumidifier
Device reducing air moisture
- humidifierMoisture-adding appliance
- air conditioningIndoor cooling system
- ventilationCirculation of fresh air
ductwork · refrigeration · climate control · comfort zone · indoor air quality · evaporator · chiller · thermostat · humidistat · insulation
- weather datatemperature, humidity, rainfall, snowfall, wind speed
- weather lorered sky, ring around moon, moon halos, halos, halo
- temperaturehot, cold, warm, cool, freezing
- weatherweather, rain, sun, snow, wind
- weather termssunny, rainy, cloudy, stormy, snowy
- climateclimate change, climate, weather, global warming, temperature
dew pointboiling point
Vaporization threshold
freezing point · flash point · melting point · ignition point