Wind chill
Calculate how cold the air feels on exposed skin from air temperature and wind speed.
Open calculatorDew point
Uses the Magnus-Tetens approximation (a = 17.62, b = 243.12). When a cold window pane or exterior wall corner drops to or below the dew-point temperature, airborne moisture condenses into liquid water.
°C
%
Dew-point temperature
12.9 °C
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At 21 °C indoor temperature and 60% relative humidity, condensation starts forming on surfaces at or below ~12.9 °C.
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Educational estimate only. Not medical, tax, legal or financial advice.