Temperatures touched 37 degrees Celsius in parts of Hong Kong yesterday, the hottest day of the year and hottest on record in Tuen Mun. Two people suffered heatstroke. The Observatory expects the heatwave to continue for the next two days and warned it might also hoist the standby typhoon signal No1 today. Typhoon Mindulle has been moving from the Philippines towards Taiwan, blowing hot air to Hong Kong. That, coupled with clear skies, pushed the temperature to 34.2 degrees at the Observatory in Tsim Sha Tsui - the sixth-hottest June day recorded there. In Tuen Mun, the temperature reached 37 degrees at 4pm, the highest recorded since a weather station was installed there in 1987. Sha Tin, Shek Kong and Chek Lap Kok also recorded temperatures above 36 degrees. Of the heatstroke victims, a 40-year-old Mongkok man, was critically ill and the other, a 56-year-old woman, was in stable condition. People tried to beat the heat in various ways. Lu Le-thuong, 74, took three showers to keep cool, but insisted on not using her air conditioning to save money. Insurance agent Felix Ng Ka-lun, whose boss requires him to wear a suit, took a taxi to work and later dived into a mall on his way to an MTR station to meet a client. 'I didn't take off my jacket because I didn't want to carry it and I wanted to look cool,' he said. Seventy-nine people checked into heat shelters last night. Temperatures are forecast to hit a slightly cooler 34 degrees today, with isolated showers and thunderstorms, and to reach 33 degrees on tomorrow's national holiday.