Sneaking in at the bottom of the list is "The Cloudspotter's Guide" by Gavin Pretor-Pinney. The reason it only snuck in in last place is not because it's inferior to the others; it's just that it doesn't quite fit the category. In fact it doesn't fit any category, it's a one-off, an original creation, a unique fluorescence.
On the face of it the author takes us on a guided tour of the different types of cloud, one chapter for each. But this is no school textbook; there's poetry, philosophy, art appreciation, ornithology, flights of fancy, daydreams, odd anecdotes, even odder anecdotes....
He asks the question "Why does rain fall from up above?" and remembers that Frankie Lymon asked the same question in the song "Why Do Fools Fall In Love". He then conducts an imaginary explanation to Mr Lymon, as I'm sure nobody did at the time, and concludes that Frankie's decline into drug addiction and an early death might have been avoided if someone had only taken the time and trouble to explain some simple meteorology to the poor boy. It all makes perfect sense I assure you!
Even if you don't remember the science the book leaves you looking at clouds differently and appreciating their beauty.