Measuring air temp. Official Met. Observations in The Basics Posted October 4 On 10/07/2018 at 10:04, Paul said: @knocker & @johnholmes - thought this article may be of interest Hi Paul Will make time to read this, possibly not for a week or so. Just back from visiting French friends and back to Geneva for a short walking holiday Friday 6am!! And thanks to Jo, there is also, if memory serves me correctly, an article on this subject on the Met O site. All the things mentioned do make a difference. I remember when as S Met O and being asked to check out prospective weather sites at several amateur stations the problems being so rigorous caused to a few folk who wanted to be official stations.