It is notjust glastonbury, the heat and humidity is widespread. Through the day it is more focused on the western half of the uk. Some eastern areas not doing as well. The reversal of fortu nes areas not doing as well. The reversal of fortunes on saturday means it is the eastern half of the uk which will see the highest temperatures. We do have cooler air waiting in the wings over the atla ntic waiting in the wings over the atlantic but at the moment we are drawing in this waft of humid air over the sahara which has brought the heat wave in central and Western Areas of europe. We are not going to see temperatures as high but we will get a significant boost over the next few days. More ploughed in the isles of scilly and the far western tip of cornwall. A bit of cloud on the east coast but elsewhere a lot of sunshine on offer. Quite a contrast in temperatures for the shetlands. 13 celsius whereas it will be 30 in the Western Highlands, which would be the warmest day of the year so far.