In message , Steve Loft
writes
Norman Lynagh wrote:

Looks like there might be something not quite right with your RH
sensor, Alan. A temperature of 22.2 with a RH of 82% gives a dew-point
of about 19C which is way too high. The airmass dew-point looks to be
around 14-15C. I've thought for a while that your RH values looked on
the high side.

Does that mean mine is correspondingly too low at the moment? I'm
currently showing 21.6C and RH 50%, DP 10C.

That looks OK Steve. There appears to be some slightly drier air over
the Southern Uplands at present. At 1200z Eskdalemuir reported a
temperature of 23.0C with a dew-point of 11.5C. This gives a RH of 48%.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England