Something in the air? ESA service warns asthma sufferers by mobile phone     A cyclist in Central London wears an anti-pollution mask, 14 May 1998 as the British Government warned of a high smog alert over the next few days, due to the current heat wave hitting the Capital. Heavy city traffic is causing traffic fumes to be caught up in the still air and high ozone levels are forecast.   The YourAir Croydon Air Quality Forecast is available via the internet, providing street-scale detail on pollution concentrations and any resulting health risks. PROMOTE and GMES     Release date: 13 June 2006