Londoners have basked in the hottest day of the year so far today. Temperatures rose to 26.3C at Heathrow Airport. That compares to around 22C in Ibiza.
Gravesend in Kent saw a high of 26C and there were a few other places close to that around the South East.
London Ambulance Service experienced their third busiest weekend ever with the warm weather and the FA Cup final contributing to the rise in calls to the service. Temperatures are expected to cool off slightly tomorrow.
With 'moderate' or 'high' levels of air pollution forecast for London today, here's the advice from campaign group, Clean Air in London.
Adults and children with lung problems, and adults with heart problems, who experience symptoms, should consider reducing strenuous physical activity, particularly outdoors.
Adults and children with lung problems, and adults with heart problems, should reduce strenuous physical exertion particularly outdoors and particularly if they experience symptoms. People with asthma may find they need to use their inhaler more often. Older people should reduce physical exertion.
On Monday this path [of air] will have changed dramatically and will have followed a long track over continental Europe possibly bringing with it industrial and urban emissions.
In the sunny conditions this will provide the base for photochemical reactions and both ozone and particulates may become 'moderate', with the chance of 'high' particulate depending on the exact make up of the imported pollution and strength of sun.