I left the max min thermometer out at home so I can see what it got up to. It was 28 when I left and I was grumpy and a bit dizzy as I slept all morning and did not drink. Had drinks and salty snack and felt better.
Just been out to the shop: it's 36 degrees outside but it is all buildings and tarmac terraced inner city streets with one small tree and feels baking hot. Bloody hot on the one minute walk.
Definitely need more trees planted in cities where it won't trap pollution.