About: Uses the Magnus-Tetens approximation. The dew point is the temperature to which air must be cooled for water vapor to condense. A higher dew point means more moisture in the air and greater discomfort.
Comfort levels: Below 10°C = dry, 10-15°C = comfortable, 16-18°C = slightly humid, 19-21°C = humid, above 21°C = oppressive.