@TZ Thanks!

@Gkikas-LGPZ i'm guessing, their dew point data is calculated by specific humidity and temperature? using Tetens Formula?

there is only dpt2m data

@Gkikas-LGPZ i know windy has many levels data from gfs model, but i didn't find them in nomads.ncep.noaa.gov which is gfs model download link

I’m a fan of windy, I’m astonished of so many parameters windy can give, I know many data come from GFS model, but ncep only has dew point at 2m above ground, I wonder where does this isobaric levels dew point data come from?