The soaring temperature is also driving up the sale of fruit, especially watermelons, in Beijing's Xinfadi wholesale market, northern China's largest agricultural produce distribution center.
"The peak season for watermelons is coming," market worker Liu Tong said.
While the dry weather became a good signal for fruit sellers, firefighters in Beijing worry about the dry conditions.
The Shanghai Meteorological Bureau issued a yellow alert on Wednesday — meaning the city's highest temperature would be above 35 C in three consecutive days.