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  1. ITV Report

Will the heatwave bring London's hottest temperature of the year?

London could see the hottest temperature of the year so far this week. After a weekend of wall-to-wall sunshine temperatures are set to hit around 29C today.

People boating on the Serpentine in Hyde Park

Very high levels of pollen and UV mean that hay fever sufferers are in for a difficult time and everyone should try to be careful they avoid burning in the sun.

The hottest day for the year for all four countries could be bettered this week. There is a fairly good chance we will see the hottest day so far. There is a chance it could possibly be tomorrow.

– Mark Foster, Met Office forecaster
People enjoy the sun in Regent's Park

The highest temperature recorded in the UK so far this year is 29.1 Celsius at St James Park, central London, on April 19.

Higher temperatures are expected over the next few days and parts of the South East could reach 30C.

High pressure is going to dominate this week so we can expect very high levels of pollen and UV. If you are in the sun you have a greater chance of getting burnt in the short term.

– Mark Foster, Met Office forecaster

The heat the UK is having is homegrown as high pressure, according to the Met Office.

Long days, very still conditions and clear skies help June temperatures to get very intense. The sun in June is relatively the highest it gets in the sky and heat can build up over successive days.