I would say the sun actually feels close to skin-blistering outside; I sat outside working for 15 minutes shirt-free (probably not good for the environment!) and have darkened further. Even Reading (inland) had recorded 5.8 and rising before 1pm (highest UV of the year). Interesting how we get these local variations on different days- ozone depletion, humidity differences, local patchy cloud etc.

Lovely today! I ain't half got a tan today, so finally I don't look like a pastey-white ghost... at least not until the misery season descends once again.

6.3 in Reading today. Shot through the 6 line!

5.1 today. Even a glimpse of the sun gets a decent value at the right time of day now.

4.9 today. Unimpressive.

why was that ? Not a cloud in the sky here all day, crystal clear weak front through overnight so no "muck" in the air...a bit confused and yes burnt too! 

We had on-and-off cumulus and even a few showers in the Winchester area PFCS; the figure I quoted of course was for Reading, and cloudiness was expected to increase today away from the coast. You lucky S Coasters no doubt had a 6 or 7!

Thanks BW makes sense now, yes could see the clouds inland and away from the Solent strip 

5.9 in Reading; no sun here! London, however, had a pace-making 6.9+ (not quite 7) so in this air-mass, all that sun must have done something to the temps too.

4.0 today; even this I find surprising: Reading, being further north, has maybe experienced an earlier clearance. The rain has not long gone from here.

6.3 today. Very good.

5.6 yesterday. (London values)The next week or so, if current models are right, will produce widespread sevens and we might even get an early 8. Let's see.

Reading had a 4.7 peak at about 12. Much cloudier further south.

The link has been defaulting to London recently- so I've edited today's reading for Reading. Sorry about that- could be yesterday too. Still interesting, but I will check the location each post for consistency.

5.7 in Reading today.

(I did check I had my station right.)

Some parts of Devon & Cornwall have UV8 forecast for Friday. Its the first 8 i've seen for Torquay this year. I think that's about as high as it can get in the UK.

We also have here in Portsmouth 8's forecasted for Friday & Saturday (subject to change). 

We can get into the high 8's in extreme cases around a fortnight either side of June 21's - UV 8.9 is the highest I've seen the local station I use have and that was a few years back. Most years the peak index is between 8.2-8.5 occurring normally a hand full of days.

Oddly the highest index so far this year has only been a 6.4 😕

Reading managed a 9.6 in June 2000 (see post #1). Exceptionally dry air that day.

6.2 today in Reading. Camborne (Cornwall) managed 7.0

You can grab a CSV file for Reading from 2005 onwards, which leads to some interesting stuff if you sort it in Excel.

At the low end,

A peak UV of just 0.7 at the end of May is truly remarkable.

At the high end, these are the only days with 7.5 (rounded 😎 or higher since June 2005:

I have a feeling that April one might just be a dodgy reading.

3.5 today.

6.6.   A double spike today- shame the cloud covered the noonday sun.

6.8 today; not surprised.

6.9 in a steady curve today.

A late spike at Reading yesterday- after 3pm reached 4.7