A cable-laying worker is believed to have died from heatstroke yesterday after collapsing on a bus without air-conditioning as the temperature reached 35 degrees Celsius, the highest this year. Leung Yun-chi, 52, was certified dead by ambulance officers at the scene. He had reportedly been laying underground cables in Tai Mei Tuk. He and two colleagues finished work at about 4pm and were taking a bus to Tai Po railway station to go home. The heat also took its toll at a beach volleyball tournament in Victoria Park. Latvia's Inguna Minusa suffered heat exhaustion and dehydration in a match against a Hungarian team. She was taken to hospital but discharged shortly afterwards. Observatory scientific officer Lee Wai-ming said the hot-weather warning was likely to be issued again today, with temperatures forecast to reach 33C. He said Hong Kong's highest recorded temperature was 36.1C on August 18, 1990. Last year the hottest day was June 5, when the mercury hit 34.2C. Today will be fine, very hot and hazy with one or two isolated showers tonight. Tomorrow is expected to be mainly fine with showers. Temperatures will range between 28C and 33C. But Mr Lee said an area of low pressure near the Luzon Strait might bring unsettled weather to the region.