What's the temperature and weather like in Beijing now?

Hello! I work in Beijing Meteorological Bureau. At present, the highest temperature in Beijing during the day is still relatively hot, about 27-30 degrees, but the temperature difference between day and night is relatively large, and it is relatively cold in the morning and evening. The lowest temperature at night is about 15- 18 degrees. So it is ok to wear short-sleeved shirts during the day, but you should wear long-sleeved underwear sooner or later.