Environmental Fallout Dust Monitoring Equipment and Devices

DustWatch CC - South Africa

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Fallout Dust Monitoring Practical and Theoretical Training - 1 or 2 day Training Course - Contact us for more information
Courses run in the 1st and 3rd week of each month as required.


Calculator for atmospheric moisture

Air temperature     Wet temperature     Dewpoint     RH

Lock DP   

Kg/m3    Kg/Kg    Vapour pressure (Pa)    svp


Note that the kg/m3 is kg water per m3 of wet air.  The kg/kg is kg water per kg of bone dry air.

Enter air temperature (C) and wet bulb or dew point temperature or RH
All other values, except wet bulb, will be recalculated when you click or tab away from the entry

Click on the "Lock DP" box to enter a new temperature at the same dewpoint. This allows calculation of the RH that the air will acquire at a different temperature.

Note: This calculator makes approximations that limit its use to the natural climate near sea level.

Description of the calculations


Copyright Tim Padfield