Perhaps but not sure it will be Foehn related. The wind is still SSE where I am on the western upslopes the Pennines. I think the convergence of SSE and SSW winds is a few miles west of here atm. Temp here is 33.5C.

Temperatures across all locations on my apps have dropped back.

London locations all in 36C.

Funnily enough the temperature is back on the increase here despite the mostly cloudy skies, back up to 34.8C, would like to exceed 35C.

My window faces east! Just went to have a look, Still hazy/cloudy but the dark clouds seem to have moved away.

Yeh it seems like the biggest increases are now happening in Yorkshire.

In theory later in the Afternoon cloud should begin to matter less as Longwave incoming radition tends to dominate over shortwave.

Cambridge is showing as 38C on WeatherOnline at 3.30pm. I assume that is the airport. 

Meanwhile in London the iPhone app has cottoned on and reduced the max to 37C. 

Cambridge airport showing 38C

So I guess at least 37.5C

Heathrow might be back on the rise.

Most stations are actually still on the rise. Just not the ones with the ultra high temps.

Rather incredibly, the temperature at Edinburgh Gogarbank has just shot up to 30.9°C as at 3pm this afternoon which has now set a new all time record for the highest temperature which I have ever recorded at any of my three local stations since I first joined TWO back in the summer of 2016.

That might even also be a new all time record for that particular station and has come as a result of an increase in the temperature by a massive 4.8°C in just the last hour.

Who knows where this might end up going next.

It will be infuriating if two clear record attempts were scuppered by irritating cloud.

Our last two attempts have been well on target to break the national record.

Would like to get some input from Stormchaser here, but I reckon thin high cloud at this time of day can actually be useful as it may cause more incoming longwave than blocks incoming shortwave. You see this effect in the Arctic in late summer, in late July cloud is good as it blocks sunshine, in August its bad because it causes more incoming LW.

These showers are now heading towards Cambridge, which is the latest hot spot at the moment.

Looks like 35.1C will be our max which was reached around 2.10pm.  Hottest day I've ever recorded for sure.  Now down to 34.9C.    

Interesting that my previous max temperature record (34C) was set on the same day as Sheffield's record on 3rd Aug, 1990.

Skies here are now full of convective cloud, and showers heading towards me according to the radar.

If it was cloud free today we would have hit 40c no question. 

37.9 has been recorded at Heathrow.

This has been confirmed by Sky but not yet by the Metoffice. They must be preparing their tweet lol

We are 0.6C off the new record.

It still looks relatively clear in the Writtle direction it must be very close now to the record.

Good thought. This comes up with respect to the Arctic sometimes. It matters a great deal what type of cloud there is.

I just stood out in the sun for 5 mins in Bicester where it appears to be at least 36*C now. There’s a hot wind that soon makes your eyes crackle if you face into it. The air is absolutely blazing even in the shade. Feels more like the Middle East than England, yet hotter as humidity isn’t quite so low here.